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 magnitude of induced emf depends upon the:

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

The motional e.m.f depends upon the

Question # 6

Split rings act as

Question # 7

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

Question # 8

The induced current in the loop can be increased by:

Question # 9

The rate change of area expressed is expressed in:

Question # 10

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

Question # 11

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

Question # 12

In a coil current change from 2 to 4 A in .05 s. If the average induced emf is 8V then coefficient of self-inductance is:

Question # 13

In magnet-coil experiment, emf can be produced by

Question # 14

The SI unit of magnetic induction is

Question # 15

Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The SI unit of magnetic induction is
A. Weber
B. Weber/meter
C. Henry
D. Tesla
2 When a conductor is moved across a magnetic field, the redistribution of charge sets up:
A. Magnetic field
B. Electrostatic field
C. Electromagnetic field
D. All of these
3 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
4 A device which converts Electrical energy into mechanical energy is called as
A. Transformer
B. Generator
C. Motor
D. All of these
5 An emf is set up in a conductor when it:
A. is kept in a magnetic field
B. is kept in a electric field
C. Move across a magnetic field
D. Both (A) and (B)
6 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
7 Michael Faraday and Joseph Henry belong respectively to
A. USA and England
B. England and France
C. England and USA
D. USA and France
8 An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic feild
D. Constant electric field
9 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
10 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:
A. Also 20º

B. 70º

C. 90º

D. 180º

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