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

An emf is set up in a conductor when it:

Question # 2

The change of magnetic flux through a circuit will produce

Question # 3

The induced current is a conductor depends upon:

Question # 4

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

Question # 5

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

Question # 6

The induced current in a conductor depends upon:

Question # 7

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

Question # 8

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

Question # 9

Eddy current is produced when:

Question # 10

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

Question # 11

Back emf is produced due to

Question # 12

The Phenomenon of generation of induced emf is called

Question # 13

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

Question # 14

In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1
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
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 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
4 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
5 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
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 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 Eddy current is produced when:
A. A metal is kept in varying magnetic field
B. A metal is kept in steady magnetic field
C. A circular coil is placed in a steady magnetic field
D. A current is passed through a circular coil
9 The induced current in the loop can be Increased by
A. Using a stronger magnetic field
B. Moving the loop faster
C. Replacing the loop by a coil of many turns
D. All above
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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