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

Which of the following quantities remain constant in step up transformer?

Question # 2

Split rings act as

Question # 3

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

Question # 4

An emf is set up in a conductor when it:

Question # 5

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

Question # 6

The induced current is a conductor depends upon:

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

Micheal Faraday and joseph Henry belong respectively to:

Question # 11

Back emf is produced due to

Question # 12

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

Question # 13


The magnitude of induced emf depends upon the:

Question # 14

Lens's law deals with the

Question # 15

Referring to above figure, current in coil P falls from its maximum value to zero:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1

An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field
2 A coil of constant area is placed in a constant magnetic field. An include current is produced in the coil when:
A. The coil is destroyed
B. The coil is Rotated
C. The coil is neither destroyed nor rotated
D. Both (A) and (B)
3 Referring to above figure, due to change in current in the coil P, the change in magnetic flux:
A. Is associated with coil P
B. Is associated with coil S
C. Causes an induced current is coil S
D. All of these
4 An emf is set up in a conductor when it
A. Is kept in a magnetic field
B. Is kept in an electric field
C. Moves across a magnetic field
D. Both A and B
5 For inducting emf in a coil the basic requirement is that:
A. Flux should link the coil
B. Change in flux should link the coil
C. Coil should form a closed loop
D. Both B and C are true
6 When there is no relative motion between the magnet and coil, the galvanometer indicates:
A. No current in circuit
B. An increasing current
C. A decreasing current
D. Either B or C
7 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
8 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
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 The motional e.m.f depends upon the
A. Length of a conductor
B. Strength of a magnet
C. Speed of the conductor
D. All of the above

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