ECAT Pre Computer Science Chapter 15 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 15 Electromagnetic Induction

Try The MCQ's Test For ECAT Physics Chapter 15 Electromagnetic Induction

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ECAT Physics Chapter 15 Electromagnetic Induction

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Question # 1

The current produced by moving a loop of wire across a magnetic field is called:

Question # 2

In a coil current change from 2 to 4 A in .05 s. If the average induced emf is 8V then coefficient of self-inductance is:

Question # 3

What is the coefficient of mutual inductance, when the magnetic flux changes by 2 X 10-2Wb, and change in current is 0.01 A?

Question # 4

The change of magnetic flux through a circuit will produce

Question # 5

Self inducede e.m.f. is also called

Question # 6

Referring to above figure, due to change in current in the coil P, the change in magnetic flux

Question # 7

An emf is set up in a conductor when it:

Question # 8

Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:

Question # 9

The induced current in a conductor depends upon:

Question # 10

The product of induced current and the resistance of the wire through which the current is passing is called:

Question # 11

The work is stored in the inductor as

Question # 12

The induced current is a conductor depends upon:

Question # 13

The magnitude of induced emf depends upon the

Question # 14

Eddy current is produced when:

Question # 15

In magnet-coil experiment, emf can be produced by:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 A.C. can be measure with the help of
A. Nuclear effect
B. Magnetic effect
C. Chemical effect
D. Heating effect
2 The magnitude of induced emf depends upon the:
A. Rate of decrease of magnetic field
B. Rate of change of magnetic field
C. Rate of increase of magnetic flux
D. Constancy of magnetic field
3

An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field
4 Transformer is used to
A. Increase alternating current
B. Increase d.c voltage
C. Increase & Decrease emf
D. All answers are right
5 Michael Faraday and Joseph Henry belong respectively to
A. USA and England
B. England and France
C. England and USA
D. USA and France
6 A coil of constant area is placed in a constant magnetic field. An induced current is produced in the coil when:
A. The coil is distorted
B. The coil is rotated
C. The coil is neither distorted nor rotated
D. Both A and B
7 Back emf is produced due to
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law
8 The rate change of area expressed is expressed in:
A. None of these
B. ms-1
C. m2s-2
D. ms-2
9 Faraday's law of electromagnetic induction has been used in the construction of:
A. Galvanometer
B. Voltmeter
C. Electric motor
D. Electric genrator
10 The induced current in a conductor depends upon:
A. Resistance of the loop
B. Speed with which the conductor moves
C. Any of these
D. Both A and B

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