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 phenomenon of generation of induced emf is called

Question # 2

The device in which induced emf is statically induced emf is:

Question # 3

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

Question # 4

When a conductor is moved across a magnetic field, the redistribution of charge sets up:

Question # 5

Which of the following quantities remain constant in step up transformer?

Question # 6

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

Question # 7

The induced emf in a coil is proportional to:

Question # 8

Micheal Faraday and joseph Henry belong respectively to:

Question # 9

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

Question # 10

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

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

Back emf is produced due to

Question # 13

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

Question # 14

Motional emf is called motional:

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 Self inducede e.m.f. is also called
A. Motional e.m.f.
B. Thermistor
C. Electrostatic induction
D. Back e.m.f
2 Faraday's law of electromagnetic induction has been used in the construction of:
A. Galvanometer
B. Voltmeter
C. Electric motor
D. Electric genrator
3 The Phenomenon of generation of induced emf is called
A. Electrostatic induction
B. Magnetic induction
C. Electromagnetic induction
D. Electric induction
4 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
5 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
6 Lenz's law is the consequence of
A. Mass
B. Energy conservation
C. Momentum conservation
D. Charge
7 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
8 Referring to above figure, due to change in current in the coil P, the change in magnetic flux:
A. Is associated with coil P
B. Is associated with coil S
C. Causes an induced current is coil S
D. All of these
9 The induced current in 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 Back emf is produced due to
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law

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