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

Back emf is produced due to

Question # 2

An induced current can be produced by:

Question # 3

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

Question # 4

The induced current in a conductor depends upon:

Question # 5

The induced current in the loop can be increased by:

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

Eddy current is produced when:

Question # 9

The induced emf in a coil is proportional to:

Question # 10

The Phenomenon of generation of induced emf is called

Question # 11

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 # 12

Lenz's law is the consequence of

Question # 13


The magnitude of induced emf depends upon the:

Question # 14

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

Question # 15

Michael Faraday and Joseph Henry belong respectively to

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 When a conductor moved with its length parallel to the lines of magnetic fled:
A. An emf is induced across its ends
B. Emf induced is similar to that of a battery
C. Emf passes through the conductor
D. Both A and B
4 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
5 Michael Faraday and Joseph Henry belong respectively to
A. USA and England
B. England and France
C. England and USA
D. USA and France
6 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
7 The change of magnetic flux through a circuit will produce
A. Magnetic Field
B. Electric Field
C. emf
D. a.c
8 When the conductor moved across a magnetic field:
A. Emf induced is similar to that of a battery

B. Emf induced gives rise to induced current

C. An emf induced across its ends

D. All are correct
9 When there is no relative motion between the magnet and coil, the galvanometer indicated
A. No current in the circuit
B. An increasing current
C. A decreasing current
D. A constant current
10 The rate change of area expressed is expressed in:
A. None of these
B. ms-1
C. m2s-2
D. ms-2

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