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

The induced current in a conductor depends upon

Question # 2

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

Question # 3

In magnet-coil experiment, emf can be produced by

Question # 4

The phenomenon of generation of induced emf is called:

Question # 5

Lens's law deals with the

Question # 6

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 # 7

Lenz's law is the consequence of

Question # 8

An induced current can be produced by:

Question # 9

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

Question # 10

Micheal Faraday and joseph Henry belong respectively to:

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
2 The law of electromagnetic induction is related to:
A. Coulomb
B. Ampere
C. Faraday
D. Lenz
3 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
4 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
5 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
6 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
7 An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic feild
D. Constant electric field
8 An induced current can be produced by
A. Constant magnetic field
B. Changing magnetic field
C. Varying electric field
D. Constant electric field
9 The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called
A. Mutual induction
B. Mutual inductance
C. Capacitance
D. Self inductance
10 The practical application of the phenomenon of Mutual induction is
A. Transformers
B. Generator
C. Motor
D. All of these

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