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 phenomenon of generation of induced emf is called

Question # 2

Michael Faraday and Joseph Henry belong respectively to

Question # 3

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

Question # 4

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:

Question # 5

Split rings act as

Question # 6

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

Question # 7

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 # 8

The practical application of the phenomenon of Mutual induction is

Question # 9

Eddy current is produced when:

Question # 10

The induced current in the loop can be increased by:

Question # 11

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

Question # 12

The induced emf in a coil is proportional to:

Question # 13

A square loop of wire is moving through a uniform magnetic field. The normal to the loop is oriented parallel to the magnetic field. The emf induced in the loop is:

Question # 14

The induced current is a conductor depends upon:

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 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
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 The Phenomenon of generation of induced emf is called
A. Electrostatic induction
B. Magnetic induction
C. Electromagnetic induction
D. Electric induction
4 The change of magnetic flux through a circuit will produce
A. Magnetic Field
B. Electric Field
C. emf
D. a.c
5 Transformer is used to
A. Increase alternating current
B. Increase d.c voltage
C. Increase & Decrease emf
D. All answers are right
6

An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field
7 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
8 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
9 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
10 In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:
A. Both A and C
B. Induced emf
C. Both A and B
D. Motion emf

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