ECAT Pre Engineering Physics Chapter 15 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

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Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

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Question # 1

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

Question # 2

The magnitude of induced emf depends upon the:

Question # 3

In magnet-coil experiment, emf can be produced by

Question # 4

The direction of induced current is always so as to oppose the cause which produces it. This is

Question # 5

Motional emf is called motional:

Question # 6

An emf is set up in a conductor when it

Question # 7

The rate change of area expressed is expressed in:

Question # 8

When the conductor moved across a magnetic field:

Question # 9

The unit of induced emf is:

Question # 10

An induced current can be produced by:

Question # 11

A coil of constant area is placed in a constant magnetic field. An include current is produced in the coil when:

Question # 12

When a conductoris moved across a magnetic field:

Question # 13

In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:

Question # 14

The law of electromagnetic induction is related to:

Question # 15

Referring to above figure, a changing current in coil P can be produced:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
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?
A. 2 H
B. 3 H
C. 1/2 H
D. Zero
2 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
3 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
4 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
5 Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current
A. Of same magnitude in the same direction
B. Of different magnitude in the same direction
C. Of same magnitude but in opposite direction
D. Of different magnitude in the opposite direction
6 The work is stored in the inductor as
A. Electric potential energy
B. Elastic potential energy
C. Magnetic energy
D. Absolute potential energy
7 The motional e.m.f depends upon the
A. Length of a conductor
B. Strength of a magnet
C. Speed of the conductor
D. All of the above
8 The unit of induced emf is:
A. Volt
B. Nm/As
C. Joule coul-1
D. Both A and C
9 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
10 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

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