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

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

Question # 2

Which of the following is most suitable as the core of transformer

Question # 3

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

Question # 4

A device which converts Electrical energy into mechanical energy is called as

Question # 5

The direction of induced current is always so as to oppose the cause which produces it. This is

Question # 6

Micheal Faraday and joseph Henry belong respectively to:

Question # 7

Referring to above figure, a changing current in coil P can be produced:

Question # 8

A.C. can be measure with the help of

Question # 9

The motional e.m.f depends upon the

Question # 10

For inducting emf in a coil the basic requirement is that:

Question # 11

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

Question # 12


The magnitude of induced emf depends upon the:

Question # 13

The work is stored in the inductor as

Question # 14

A coil of constant area is placed in a constant magnetic field. An induced current is produced in the coil when:

Question # 15

The induced current in a conductor depends upon:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The rate change of area expressed is expressed in:
A. None of these
B. ms-1
C. m2s-2
D. ms-2
2 The product of induced current and the resistance of the wire through which the current is passing is called:
A. Electromagnetic induction
B. induced emf
C. Induced current
D. Self induced
3 The work is stored in the inductor as
A. Electric potential energy
B. Elastic potential energy
C. Magnetic energy
D. Absolute potential energy
4 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
5 Referring to above figure, current in coil P falls from its maximum value to zero:
A. At the instant the switch is closed
B. At the instant the switch is opened
C. When switch is kept open
D. When switch is kept closed
6 The device in which induced emf is statically induced emf is:
A. Transformer
B. AC generator
C. Alternator
D. Dynamo
7 When there is no relative motion between the magnet and coil, the galvanometer indicated
A. No current in the circuit
B. An increasing current
C. A decreasing current
D. A constant current
8 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?
A. 2 H
B. 3 H
C. 1/2 H
D. Zero
9 An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic feild
D. Constant electric field
10 Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:
A. 45 V
B. 15 V
C. 90 V
D. 300 V

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