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

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 # 2

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

Question # 3

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

Question # 4

The phenomenon of generation of induced emf is called

Question # 5

An emf is set up in a conductor when it:

Question # 6

The induced current in a conductor depends upon:

Question # 7

Faraday's law of electromagnetic induction has been used in the construction of:

Question # 8

Transformer is used to

Question # 9

An induced current can be produced by:

Question # 10

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 # 11

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

Question # 12

Motional emf is called motional:

Question # 13

The magnitude of induced emf depends upon the

Question # 14

The induced current in the loop can be Increased by

Question # 15

The change of magnetic flux through a circuit will produce

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1

An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field
2 Split rings act as
A. Vibrator
B. Resistor
C. Motor
D. Commulator
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 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
5 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
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 The practical application of the phenomenon of Mutual induction is
A. Transformers
B. Generator
C. Motor
D. All of these
8 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
9 The induced current is 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)
10 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:
A. 0.25 N
B. 0.25 V
C. 2.5 V
D. 2.5 N

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