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, due to change in current in the coil P, the change in magnetic flux

Question # 2

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

Question # 3

The change of magnetic flux through a circuit will produce

Question # 4

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

Question # 5

When a conductor is moved across a magnetic field, the redistribution of charge sets up:

Question # 6

Plan of a coil makes an angle of 20º with the lines of magnetic field. The angle between B and vector area of plane of coil is:

Question # 7

Motional emf is called motional:

Question # 8

In magnet-coil experiment, emf can be produced by

Question # 9

When the conductor moved across a magnetic field:

Question # 10

An emf is set up in a conductor when it

Question # 11

The induced current in the loop can be Increased by

Question # 12

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

Question # 13

When a conductor moved with its length parallel to the lines of magnetic fled:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 Michael Faraday and Joseph Henry belong respectively to
A. USA and England
B. England and France
C. England and USA
D. USA and France
2 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
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 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
5 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
6 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
7 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
8 The phenomenon of generation of induced emf is called:
A. Electrostatic induced
B. Magnetic induced
C. Electromagnetic induced
D. Electric induced
9 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
10 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

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