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

Referring to above figure, current in the coil P grows from zero to its maximum value

Question # 2

Lenz's law is the consequence of

Question # 3

Eddy current is produced when:

Question # 4

An induced current can be produced by:

Question # 5

Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current

Question # 6

Faraday's law of electromagnetic induction has been used in the construction of:

Question # 7

Transformer is used to

Question # 8

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

Question # 9

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

Question # 10

Michael Faraday and Joseph Henry belong respectively to

Question # 11

An emf is set up in a conductor when it:

Question # 12

An induced current can be produced by

Question # 13

The induced current in the loop can be Increased by

Question # 14

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

Question # 15


The magnitude of induced emf depends upon the:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current:
A. Of same magnitude in the same direction
B. Of different magnitude in the same direction
C. Of same magnitude but in opposite direction
D. Of different magnitude in the opposite direction
2 The phenomenon of generation of induced emf is called
A. Electrostatic induction
B. Magnetic induction
C. Electromagnetic induction
D. Electric induction
3 Lens's law deals with the
A. Magnitude of induced current
B. Magnitude of induced e.m.f
C. Direction of induced e.m.f
D. Direction of induced current
4 The current produced by moving a loop of wire across a magnetic field is called
A. Direct current
B. Magnetic current
C. Alternating current
D. Induced current
5 A metal road of length 1m is moving at a speed of 1 ms-1In a direction making angle of 30º with 0.5 Y magnetic field. The emf produced in the rod is:
A. 0.25 N
B. 0.25 V
C. 2.5 V
D. 2.5 N
6 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
7 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
8 Lenz's law is the consequence of
A. Mass
B. Energy conservation
C. Momentum conservation
D. Charge
9 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
10 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

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