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

Question # 2

The law of electromagnetic induction is related to:

Question # 3

The unit of induced emf is:

Question # 4

The induced current in the loop can be increased by:

Question # 5

When there is no relative motion between the magnet and coil, the galvanometer indicates:

Question # 6

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

Question # 7

In magnet-coil experiment, emf can be produced by

Question # 8

The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called

Question # 9

Michael Faraday and Joseph Henry belong respectively to

Question # 10

When the conductor moved across a magnetic field:

Question # 11


The magnitude of induced emf depends upon the:

Question # 12

The magnitude of induced emf depends upon the:

Question # 13

Split rings act as

Question # 14

A.C. can be measure with the help of

Question # 15

Lens's law deals with the

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
2 Referring to above figure, current in the coil P grows from zero to its maximum value:
A. At the instant the switch is closed
B. At the instant the switch is opened
C. When switch is kept open
D. All of above
3 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
4 Which of the following quantities remain constant in step up transformer?
A. Current
B. Voltage
C. Power
D. Heat
5 In magnet-coil experiment, emf can be produced by:
A. Keeping the coil stationary and moving the magnet
B. Keeping the magnet stationary and moving the coil
C. Relative motion of the loop and magnet
D. Any one of above
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 When the conductor moved across a magnetic field:
A. Emf induced is similar to that of a battery

B. Emf induced gives rise to induced current

C. An emf induced across its ends

D. All are correct
8 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
9 Micheal Faraday and joseph Henry belong respectively to:
A. USA and England
B. England and France
C. England and USA
D. USA and France
10 The current produced by moving a loop of a wire across a magnetic field is called:
A. Direct current
B. Magnetic current
C. Alternating current
D. Induced current

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