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

Motional emf is called motional:

Question # 2

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 # 3

A.C. can be measure with the help of

Question # 4

The induced current in a conductor depends upon:

Question # 5

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

Question # 6

The SI unit of magnetic induction is

Question # 7

The magnitude of induced emf depends upon the:

Question # 8

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 # 9

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

Question # 10

The magnitude of induced emf depends upon the

Question # 11

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

Question # 12

Micheal Faraday and joseph Henry belong respectively to:

Question # 13

In magnet-coil experiment, emf can be produced by

Question # 14

Split rings act as

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
2 Transformer is used to
A. Increase alternating current
B. Increase d.c voltage
C. Increase & Decrease emf
D. All answers are right
3 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)
4 Faraday's law of electromagnetic induction has been used in the construction of:
A. Galvanometer
B. Voltmeter
C. Electric motor
D. Electric genrator
5 Motional emf is called motional:
A. Electromagnetic force and is measured in newtons
B. Electromotive force and is measured in volt
C. Electromotive force and is measured in newtons
D. Electromagnetic force and is measured in volts
6 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
7 Self inducede e.m.f. is also called
A. Motional e.m.f.
B. Thermistor
C. Electrostatic induction
D. Back e.m.f
8 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
9 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
10
The magnitude of induced emf depends upon the:
A. Rate of decrease of magnetic field
B. Rate of change of magnetic field
C. Rate of increase of magnetic flux
D. Constancy of magnetic field

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