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

What is the coefficient of mutual inductance, when the magnetic flux changes by 2 X 10-2Wb, and change in current is 0.01 A?

Question # 2

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 # 3

The induced emf in a coil is proportional to:

Question # 4

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

Question # 5

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 # 6

An induced current can be produced by:

Question # 7

The practical application of the phenomenon of Mutual induction is

Question # 8

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

Question # 9

Michael Faraday and Joseph Henry belong respectively to

Question # 10

An induced current can be produced by

Question # 11

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

Question # 12

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

Question # 13

The phenomenon of generation of induced emf is called:

Question # 14

The work is stored in the inductor as

Question # 15


The magnitude of induced emf depends upon the:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The phenomenon of generation of induced emf is called:
A. Electrostatic induced
B. Magnetic induced
C. Electromagnetic induced
D. Electric induced
2 A.C. can be measure with the help of
A. Nuclear effect
B. Magnetic effect
C. Chemical effect
D. Heating effect
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 Back emf is produced due to
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law
5 The direction of induced current is always so as to oppose the cause which produces it. This is
A. Lenz's law
B. Ampere's law
C. Faraday's law
D. Coulomb's law
6 The unit of induced emf is:
A. Volt
B. Nm/As
C. Joule coul-1
D. Both A and C
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 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
9 An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field
10 Referring to above figure, a changing current in coil P can be produced:
A. At the instant the switch is closed
B. At the instant the switch is opened
C. With the help of rheostat
D. All of these

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