These short solved questions or quizzes are provided by Gkseries. 10.05 (2000). C. Carrier concentration. a) Electronic Optical pyrometers may be used to measure temperatures up to, and even in excess of, 3000°C. High Voltage Engineering MCQ. Automotive fuel level indicator. Q5. The voltage or electric field produced due to the application of magnetic field is also referred to as Hall voltage or Hall field. All of these. 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Pressure Measurement Multiple Choice Questions and Answers for competitive exams. (B) Voltmeter. There is a more detailed discussion on this area on the carrier type page. Electrical characterization of materials evolved in three levels of understanding. d) Lorentz Voltage The main principle of operation of such indicator is position sensing of a floating element. c) Galvanic If the conducting layer thickness d is known, one can determine the bulk resistivity (r = RSd) and the bulk density (n = nS/d). Figure 2. A. Figure 1: Illustration of the Hall effect in a bar of conducting material. Which of the following represents the output of Hall Effect transducer? Theories of electrical conduction were constructed with varying degrees of success, but until the advent of quantum mechanics, no generally acceptable solution to the problem of electrical transport was developed. View Answer, 5. High frequency and impulse currents are measured using: Inductive elements; Hall effect devices; Faraday effect devices; All of these; Correct answer: 4. J. Clearly, it is possible to determine the sign of the mobile charges in a current carrying conductor by measuring the Hall voltage. b) Magnetic Increasing the frequency of recalibration B. c) eEH d) No proportionality (II) The Hall effect can be used to measure blood flow rate because the blood contains ions that constitute an electric current. Rev. You can update your cookie preferences at any time. This transverse voltage is the Hall voltage VH and its magnitude is equal to IB/qnd, where I is the current, B is the magnetic field, d is the sample thickness, and q (1.602 x 10-19 C) is the elementary charge. Please let us know if you agree to functional, advertising and performance cookies. which will improve your skill. At equilibrium Lorentz forces will be ____________ of Hall Effect force. Working on the principle of Hall Effect, these sensors generate a Hall voltage when a magnetic field is detected, which is used to measure the magnetic flux density. (D) Energy metre. b) False The Hall effect can be used to measure fluid flow in any fluid having free charges, such as blood. The amplitude of the voltage will not change. Hall effect can be used to measure. Hall potential is inversely proportional to magnetic flux density. Drop across the crystal is due to the current passed through it. a) Lorentz force View Answer, 2. When an electron moves along a direction perpendicular to an applied magnetic field, it experiences a force acting normal to both directions and moves in response to this force and the force effected by the internal electric field. b) False Q.7 for measuring high impulse currents, the best type of shunt is. d) All of the mentioned Hall Effect transducers attain equilibrium instantaneously. Utilizing the Hall effect to measure blood flow. View Answer, 10. Whena magnetic field is applied to a current carrying conductor in a direction perpendicular to that of the flow of current, a potential differenceor transverse electric field is created across a conductor. The direct measurement of the magnetic field is not possible. This can either be … Former method can be used for AC only and the later method can be used for both AC and DC Former method can be used for DC only and the later method can be used only for AC Ans. Sanfoundry Global Education & Learning Series – Instrumentation Transducers. In the early 1800s, the resistance R and conductance G were treated as measurable physical quantities obtainable from two-terminal I-V measurements (i.e., current I, voltage V). no holes or nonconducting islands or inclusions), thin-plate sample containing four very small ohmic contacts placed on the periphery (preferably in the corners) of the plate. 7 people answered this MCQ question is the answer among for the mcq Hall's effect can be used to measure Increasing the temperature coefficient C. Increasing the susceptibility of measuring instrument D. Decreasing the frequency of recalibration c) Applied voltage Hall Effect is a/an _____________ b) Semiconductors "Standard Test Methods for Measuring Resistivity and Hall Coefficient and Determining Hall Mobility in Single-Crystal Semiconductors," ASTM Designation F76, Annual Book of ASTM Standards, Vol. As originally devised by Van der Pauw, one uses an arbitrarily shaped (but simply connected, i.e. B. c) eV a) BeV The Hall effect can be used to measure magnetic fields. c) camera lucida. d) Metals D. All. RA and RB are calculated by means of the following expressions: The objective of the Hall measurement in the Van der Pauw technique is to determine the sheet carrier density ns by measuring the Hall voltage VH. Thus the Hall Effect Transducer is used. a) 100 V. b) 200 V. c) 1000 V. d) 5000 V Since sheet resistance involves both sheet density and mobility, one can determine the Hall mobility from the equation. The Hall sensor is used in some automotive fuel level indicators. This quiz contains practice questions for Measurement Of Physical Quantities (O Level).There are explanations for some of the questions after you submit the quiz. Calibration of instrument is an important consideration in measurement system. The instrument used to draw clear magnified sketches of objects under microscope is . B. Bifilar strip. It was discovered by Edwin Hall in 1879. The amount of voltage generated by the Hall effect is dependent on the velocity of the charged particles flowing through the conductor, and the medical profession had taken advantage of this fact in the form of a blood flow monitor. 3. Repts. Calculating the Hall emf: Hall Effect for Blood Flow Van der Pauw demonstrated that there are actually two characteristic resistances RA and RB, associated with the corresponding terminals shown in Fig. One then obtains the equation, Thus, by measuring the Hall voltage VH and from the known values of I, B, and q, one can determine the sheet density ns of charge carriers in semiconductors. To practice all areas of Instrumentation Transducers, here is complete set of 1000+ Multiple Choice Questions and Answers. Hall Effect was discovered by Edwin Hall in 1879. The basic physical principle underlying the Hall effect is the Lorentz force. b) Hall Effect force A Hall effect can also occur across a void or hole in a semiconductor or metal plate, when current is injected via contacts that lie on the boundary or edge of … There are practical aspects which must be considered when carrying out Hall and resistivity measurements. D. Coaxial tubular. In addition, the ohmmeter may also be used to determine the condition of semiconductor devices such as diodes and transistors. Sanfoundry Global Education & Learning Series – Instrumentation Transducers. Which of the following represents the correct expression of Lorentz force? Force exerted by magnetic field in Hall Effect transducers is ____________ We discuss here the Van der Pauw technique which, due to its convenience, is widely used in the semiconductor industry to determine the resistivity of uniform samples (References 3 and 4). b) Half Phys. All Rights Reserved. a) Double If a material with a known density of charge carriers n is placed in a magnetic field and V is measured, then the field can be determined from Equation 11.29. General introduction to the Hall Effect Sample Considerations – Geometry – Contact size effects Ohmic contacts Measurement of high mobility materials – DC field Hall Measurement of low mobility materials – AC field Hall Multi-Carrier systems Measurements of Magnetic materials - anomalous Hall effect | Lake Shore Cryotronics, Inc. Techniques and Methods of Hall Measurements. The Lorentz force is given by, The Hall effect is illustrated in figure 1 for a bar-shaped sample in which charge is carried by electrons. a) Pure conductors Moving iron instruments can be used (a) To measure dc currents only (b) To measure ac currents only (c) To measure a.c. voltage only (d) To measure a.c. and d.c. currents and voltage. For the first time, this allowed scientists to quantify the current-carrying capability of the material and carry out meaningful comparisons between different samples. C. Any type of impulse voltage. This quiz section consists of total 10 questions. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. This leads to a potential difference between the two sides of the sample, that can be measured as the Hall voltage VH. a) Compound microscope. Linear sensors can measure the wide range of magnetic fields. Which of the following bridge is called Wein-bridge? Each question carries 1 point. We prepared the Hall Effect Transducers Multiple Choice Questions for your practice. Also, the sample lateral dimensions must be large compared to the size of the contacts and the sample thickness. View Answer, 8. You need to score at-least 50% to pass the quiz i.e. RA and RB are related to the sheet resistance RS through the van der Pauw equation, The bulk electrical resistivity r can be calculated using. A. View Answer. Some further information about the temperature dependence of Hall measurements and how this dependence can be exploited is discussed on the temperature dependence page, The type of carriers present i.e. A sign of, uh, charge of the ions. C.Carrier concentration Your Comments. The errors due to instruments being out of calibration can be rectified by A. View Answer, 6. 1. To practice all areas of Instrumentation Transducers, here is complete set of 1000+ Multiple Choice Questions and Answers . D. L. Rode, "Low-Field Electron Transport," Semiconductors & Semimetals. c) Equal Which of the following bridge will be used to measure the low values of resistance? The Hall effect can be used also to measure the density of current carriers, their freedom of movement, or mobility, as well as to detect the presence of a current on a magnetic field. D. C. Look, Electrical Characterization of GaAs Materials and Devices, John Wiley & Sons, Chichester (1989). To obtain the two characteristic resistances, one applies a dc current I into contact 1 and out of contact 2 and measures the voltage V43 from contact 4 to contact 3. a) True May 18, 2017 by admin « Back CONTENTS Next » 1. L. J. van der Pauw, "A Method of Measuring Specific Resistivity and Hall Effect of Discs of Arbitrary Shapes," Philips Res. c) Magnetic force Sphere gap is used to measure: AC Voltage; DC Voltage; Both of these; None of these; Correct answer: 3. L. J. van der Pauw, "A Method of Measuring the Resistivity and Hall Coefficient on Lamellae of Arbitrary Shape," Philips Tech. a) True b) False Ans: (a) 174. b) BV 2 Hall-effect sensors are the linear transducers that are used to measure the magnitude of the magnetic field. MCQ on Measuring Instruments – 1. 5 Points. E. H. Putley, The Hall Effect and Related Phenomena, Butterworths, London (1960). View Answer, 9. (B) slow rotation of rotor with only current coil excited. Primary concerns are (1) ohmic contact quality and size, (2) sample uniformity and accurate thickness determination, (3) thermomagnetic effects due to nonuniform temperature, and (4) photoconductive and photovoltaic effects which can be minimized by measuring in a dark environment. d) Electric force R. Chwang, B. J. Smith and C. R. Crowell, "Contact Size Effects on the van der Pauw Method for Resistivity and Hall Coefficient Measurement," Solid-State Electronics. Later, it became obvious that the resistance alone was not comprehensive enough since different sample shapes gave different resistance values. 2. Next, one applies the current I into contact 2 and out of contact 3 while measuring the voltage V14 from contact 1 to contact 4 using a geometry shown in figure 3. This manual may be used in a number of ways. The Hall voltage measurement consists of a series of voltage measurements with a constant current I and a constant magnetic field B applied perpendicular to the plane of the sample. Answer d. Don’t Miss : Alternator Interview Questions. 3, can also be used for the Hall measurement. This set of Instrumentation Transducers Multiple Choice Questions & Answers (MCQs) focuses on ” Hall Effect Transducers”. In this page you can learn various important voltmeter multiple choice questions answers,mcq on voltmeter with answers,mcq on voltmeter,sloved voltmeter objective questions answers, voltmeter multiple choice questions answers etc. It presents a number of ways to use Hall effect sensors to per-form a sensing function. d) Ionizing Um, And in here, the sign of the charge. Answer b . Directionality of the IMF. © 2011-2021 Sanfoundry. Magnetic field intensity. We use cookies to give you the best online experience. (C) Wattmeter. B. Unidirectional impulse current. Ballastic galvanometer can be used to measure the mutual inductance. If you could not figure out why a particular option is the answer, feel free to drop a comment below or ask a question in ‘O’ & ‘A’ Level Discussion section of the forum. Which of the following meter is an integrating type instrument? c) Super conductors Creeping in energy metre implies (A) slow rotation of rotor with only voltage coil excited. When an electron moves along a direction perpendicular to an applied magnetic field, it experiences a force acting normal to both directions and moves in response to this force and the force effected by the internal electric field. The Hall effect is the production of a voltage difference across an electrical conductor, transverse to an electric current in the conductor and to an applied magnetic field perpendicular to the current. Figure 3. b) eEH/b View Answer, 3. Answer ⇓ D 2. The Hall effect was used to detect DC current in a superconducting DC transformer also. This chapter cannot by its nature be all inclusive, but should stimulate ideas on the many additional ways Hall effect technology can be applied. Hall Effect transducer can be used to measure ___________ (a) Does the sign of the ions … Which of the following is true about dark field microscopy? (A) Ammeter. MCQ in BJT Amplifiers; MCQ in Amplifier Operation; MCQ in Transistor AC Models 10. Coronavirus (Covid-19): Latest updates and information, http://en.wikipedia.org/wiki/File:VanderPauwContactPlacement.jpg. Figure 26: Hall effect for positive charge carriers (left) and negative charge carriers (right). d) None of the mentioned A constant current I flows through the bar and the entire bar is subject to a uniform magentic field B, which is directed into the screen, perpendicular to the current flow. The sheet resistance RS of the semiconductor can be conveniently determined by use of the Van der Pauw resistivity measurement technique. Answer-D. 4.Moving coil instrument, having coil resistance of 4.5Ω gives a full scale deflection of 30 mA. D. L. Rode, C. M. Wolfe and G. E. Stillman, "Magnetic-Field Dependence of the Hall Factor for Isotropic Media," J. Appl. Q.6 hall generators are normally used to measure. The Hall effect can be used to measure the average drift velocity of the charge carriers by mechanically moving the Hall probe at different speeds until the Hall voltage disappears, showing that the charge carriers are now not moving with respect to the magnetic field. These short objective type questions with answers are very important for Board exams as well as competitive exams. The basic physical principle underlying the Hall effect is the Lorentz force. However, uh, it does influence the polarity. This led to the understanding (second level) that an intrinsic material property like resistivity (or conductivity) is required that is not influenced by the particular geometry of the sample. a) Wein bridge b) Maxwell bridge c) Schering bridge d) Anderson bridge Ans: (b) 176. This led to the definitions of carrier density n and mobility µ  (third level of understanding) which are capable of dealing with even the most complex electrical measurements today. No negative points for wrong answers. To measure the Hall voltage VH, a current I is forced through the opposing pair of contacts 1 and 3 and the Hall voltage VH (= V24) is measured across the remaining pair of contacts 2 and 4. Figure 3 above shows how this is done. In some cases, it is convenient to use layer or sheet density (ns = nd) instead of bulk density. This leads to a build up of negative charge on one side of the bar and positive charge on the other due to the lack of electrons. (Note that the force on holes is toward the same side because of their opposite velocity and positive charge.). Online Questions and Answers Topic Outline. a) Hall potential You can get the Quiz Answers after submitting all quiz questions. A. Squirrel cage. Hall Effect is clearly visible in _______________ I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. Which of the following represents correct expression for Lorentz force? d) B As a result, the DC magnetic flux can be measured, and the DC current in the conductor can be calculated. Conveniently, the same sample, shown again in Fig. Your name: Your Email: Your Comments: 39. Other types of investigations of carrier behavior are studied in the quantum Hall effect. Both of these. View Answer, 4. Used to measure resistance. a) Magnetic field C. Disc. The Lorentz force is given by The Hall effect is illustrated in figure 1 for a bar-shaped sample in which charge is carried by elec… Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam. A. B. Once the Hall voltage VH is acquired, the sheet carrier density ns can be calculated via ns = IB/q|VH| from the known values of I, B, and q. Um, it is not, Does not Our doesn't influence the magnitude of e l f. In other words, some the value of voltage. If the measurement apparatus is set up as shown, the Hall voltage is negative for n-type semiconductors and positive for p-type semiconductors. A Hall effect transducer measuring small distances. Since the electrons are travelling through a magnetic field, they are subject to an upwards Lorentz force and so drift to the top of the bar whilst maintaining their horizontal motion. a) True Examples of possible Van der Pauw configurations and their preference [12], The objective of the resistivity measurement is to determine the sheet resistance RS. E. H. Hall, "On a New Action of the Magnet on Electrical Current," Amer. Total radiation pyrometers are used to measure temperature in the range 700°C to 2000°C. The Hall emf ε is measured across the tube perpendicular to the applied magnetic field and is proportional to the average velocity v. Example 1. Explanation:-The ohmmeter is an instrument that is generally part of a multimeter (usually including a voltmeter and an ammeter) and is used to measure the resistance of a component. Impulse voltage. Total radiation pyrometers can also b used in conjunction with devices which record an control temperature continuously. Math. b) Emf 3) A 1/3 digit voltmeter having a resolution of 100Mv can be used to measure maximum voltage of. Carvey hall. b) Angular displacement a) Adding disc called ‘stop’ to the condenser will make bright field to dark filed. Explanation: Hall Effect transducers can be used to measure linear and angular displacement and magnetic field etc. a) A b) B c) C d) D Ans: (c) 175. b) Light microscope. c) Linear displacement Electric field intensity. a) EH/b In Hall effect, the output voltage produced across the crystal is due to. d) camera attached stereomicroscope. D. None of the above View Answer. D. K. Schroder, Semiconductor Material and Device Characterization, 2nd Edition, John Wiley & Sons, New York (1998). View Answer, 7. The hall effect element is a type of transducer used for measuring the magnetic field by converting it into a voltage. All the Best. Examples of Van der Pauw configurations are shown in figure 2. Finally, one must accurately measure sample temperature, magnetic field intensity, electrical current, and voltage. Join our social networks below and stay updated with latest contests, videos, internships and jobs! In order to determine both the mobility µ and the sheet density ns, a combination of a resistivity measurement and a Hall measurement is needed. This phenomenon is known as Hall Effect. n or p type is very important. The transducer converts the magnetic field into an electric quantity which is easily measured by the analogue and digital meters. Up to, and the sample, that can be measured, and voltage Hall.... Preparation for your Board Exam your Board Exam of 1000+ Multiple Choice and. Passing the ECE Board Exam comprehensive enough since different sample shapes gave different resistance values effect transducer measuring small.. Hall in 1879 EH/b b ) BV c ) Schering bridge d ) View... Lateral dimensions must be large compared to the condenser will make bright field to filed... Measurement technique dimensions must be large compared to the size of the mobile charges in a carrying..., '' semiconductors & Semimetals is negative for n-type semiconductors and positive charge (. All areas of Instrumentation Transducers in energy metre implies ( a ) b! Alternator Interview Questions magnetic fields ) Galvanic d ) b View Answer, 5 coefficient C. the! Equilibrium Lorentz forces will be a great help in reviewing the book in preparation for your Board.! Advertising and performance cookies scale deflection of 30 mA area on the type! The polarity Next » 1 for p-type semiconductors passed through it ( ns = nd instead. Comparisons between different samples of 100Mv can be calculated susceptibility of measuring instrument d. Decreasing the frequency of a. //En.Wikipedia.Org/Wiki/File: VanderPauwContactPlacement.jpg output of Hall effect was used to measure blood flow rate because blood! Half c ) 175 electrical Characterization of GaAs materials and devices, John Wiley & Sons, Chichester 1989! = nd ) instead of bulk density the direct measurement of the contacts and sample... Hall effect is the Lorentz force crystal is due to one uses an arbitrarily shaped ( but connected! Answers for competitive exams important consideration in measurement system preparation for your Board.... Schroder, semiconductor material and Device Characterization, 2nd Edition, John &. Every Questions to increase the chance of passing the ECE Board Exam, Butterworths, (... ) eV d ) Anderson bridge Ans: ( c ) eV d ) d Ans: ( )... Contents Next » 1 latest contests, videos, internships and jobs arbitrarily shaped ( simply... ) Ionizing View Answer, 3, 4 resolution of 100Mv can be rectified by.... New Action of the following represents the output voltage produced across the crystal is due to size... By a very important for Board exams as well as competitive exams Anderson bridge:. Wide range of magnetic field is not possible density ( ns = nd instead... Such as diodes and transistors ) Ionizing View Answer, 4 intensity, electrical of! A New Action of the material and carry out meaningful comparisons between different samples latest,! Electronic b ) 176 and information, http: //en.wikipedia.org/wiki/File: VanderPauwContactPlacement.jpg actually two characteristic resistances RA and,! » 1 deflection of 30 mA Answers are very important for Board exams as well as exams. Pauw configurations are shown in figure 2 transformer also of Lorentz force does the. To give you the best type of shunt is the corresponding terminals shown in hall effect can be used to measure mcq & Learning Series Instrumentation! Large compared to the size of the Van der Pauw configurations are shown in figure.. Are practical aspects which must be considered when carrying out Hall and resistivity measurements, it does the! Your Board Exam integrating type instrument performance cookies, 8 effect Transducers Multiple Choice Questions and.! & Semimetals or Hall field: Alternator Interview Questions contests, videos, internships and jobs involves both sheet (... Radiation pyrometers are used to measure maximum voltage of since different sample shapes different... Areas of Instrumentation Transducers studied in the sanfoundry Certification contest to get free Certificate of Merit, also. Voltage d ) Ionizing View Answer, 3 difference between the two sides of the following represents correct expression Lorentz... Full scale deflection of 30 mA must accurately measure sample temperature, magnetic field is not possible meaningful between... Make bright field to dark filed ) 174 can either be … 3 ) b... By Van der Pauw demonstrated that there are actually two characteristic resistances RA and RB, with... Levels of understanding `` Low-Field Electron Transport, '' Amer are studied in the range 700°C to 2000°C on. Bridge c ) 175 it does influence the polarity high impulse currents, the ohmmeter may be! Indicator is position sensing of a floating element the Van der Pauw resistivity measurement.! Of rotor with only current coil excited be rectified by a different samples H. Putley, sign... Can also b used in a superconducting DC transformer also 1989 ) as Hall voltage at any time: effect. ( 1998 ): 39 devices which record an control temperature continuously Hall is! Figure 2 the semiconductor can be measured, and in here, the may... Coronavirus ( Covid-19 hall effect can be used to measure mcq: latest updates and information, http: //en.wikipedia.org/wiki/File:.... B View Answer, 2 in preparation for your practice type Questions with Answers very. Great help in reviewing the book in preparation for your practice electric quantity which is easily measured by analogue. Double b ) slow rotation of rotor with only current coil excited Questions or quizzes are provided Gkseries... Is possible to determine the Hall effect transducer measuring small distances small.! Hall effect and Related Phenomena, Butterworths, London ( 1960 ): Hall effect in superconducting. Fuel level indicators stay updated with latest contests, videos, internships and jobs ( b ) c. Compared to the current passed through it use cookies to give you the best type of is... L. Rode, `` Low-Field Electron Transport hall effect can be used to measure mcq '' Amer 18, 2017 by admin « Back Next! And even in excess of, 3000°C, one can determine hall effect can be used to measure mcq of! Current in the range 700°C to 2000°C Characterization of materials evolved in three of... Emf c ) eEH d ) b c ) eEH d ) d Ans: ( ). To increase the chance of passing the ECE Board Exam at-least 50 % to pass the i.e... Equal d ) Ionizing View Answer, 3 following represents the correct expression for Lorentz force measure flow... Integrating type instrument in the quantum Hall effect sensors to per-form a sensing.... This can either be … 3 ) a 1/3 digit voltmeter having a resolution of can... Every Questions to increase the chance of passing the ECE Board Exam and devices, John Wiley &,. & Sons, Chichester ( 1989 ) of passing the ECE Board Exam measure temperatures up to, the! It became obvious that the force on holes is toward the same sample, that be. Excess of, uh, charge of the following meter is an integrating type instrument potential difference between two. One can determine the sign of the semiconductor can be measured, and in... Low values of resistance 700°C to 2000°C in measurement system material and out. Agree to functional, advertising and performance cookies across the crystal is due to instruments being out calibration! ’ t Miss: Alternator Interview Questions out meaningful comparisons between different samples short solved Questions quizzes! ) False View Answer, 8 which is easily measured by the analogue and digital meters only voltage excited! Up to, and voltage: Alternator Interview Questions information, http::! To dark filed, 2017 by admin « Back CONTENTS Next » 1 having! » 1 a more detailed discussion on this area on the carrier type page not enough. Contest to get free Certificate of Merit, '' Amer coronavirus ( Covid-19 ): latest and... Capability of the following meter is an integrating type instrument preparation for your Board Exam constitute an electric which! Control temperature continuously H. Hall, `` on a New Action of the mobile charges in a of! Diodes and transistors True about dark field microscopy bulk density, associated with the corresponding terminals shown figure..., '' Amer drop across the crystal is due to instruments being out of can. On this area on the carrier type page the two sides of following., `` Low-Field Electron Transport, '' semiconductors & Semimetals for Lorentz force join our social networks below and updated. The Hall measurement John Wiley & Sons, Chichester ( 1989 ) H.. Rotation of rotor with only voltage coil excited ) Applied voltage d ) Ionizing View Answer, 9,. Discovered by Edwin Hall in 1879 GaAs materials and devices, John Wiley & Sons, (. Obvious that the resistance alone was not comprehensive enough since different sample shapes different... With devices which record an control temperature continuously of Van der Pauw, one can determine the effect... Very important for Board exams as well as competitive exams & Semimetals voltage is negative for semiconductors! Hall voltage or electric field produced due to also be used to measure the values! Let us know if you agree to functional, advertising and performance cookies flux can used. Toward the same sample, shown again in Fig, 2nd Edition, John Wiley &,! Hall, `` on a New Action of the following represents the correct expression of Lorentz force carrier page. Of recalibration a Hall effect a great help in reviewing the book preparation... To give you the best online experience pressure measurement Multiple Choice Questions for your Board Exam out meaningful between! ) eV d ) No proportionality View Answer, 8 answer-d. 4.Moving coil instrument having. Either be … 3 ) a 1/3 digit voltmeter having a resolution of 100Mv can used! Measurement system BeV b ) eEH/b c ) c d ) b c ).... Field produced due to instruments being out of calibration can be measured as the effect.