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

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

Question # 2

Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:

Question # 3

In magnet-coil experiment, emf can be produced by

Question # 4

Micheal Faraday and joseph Henry belong respectively to:

Question # 5

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 # 6

The phenomenon of generation of induced emf is called

Question # 7

An emf is set up in a conductor when it

Question # 8

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

Question # 9

Referring to above figure, due to change in current in the coil P, the change in magnetic flux

Question # 10

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

Question # 11

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 # 12

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

Question # 13

A.C. can be measure with the help of

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 Lens's law deals with the
A. Magnitude of induced current
B. Magnitude of induced e.m.f
C. Direction of induced e.m.f
D. Direction of induced current
2 In magnet-coil experiment, emf can be produced by:
A. Keeping the coil stationary and moving the magnet
B. Keeping the magnet stationary and moving the coil
C. Relative motion of the loop and magnet
D. Any one of above
3 Micheal Faraday and joseph Henry belong respectively to:
A. USA and England
B. England and France
C. England and USA
D. USA and France
4 Michael Faraday and Joseph Henry belong respectively to
A. USA and England
B. England and France
C. England and USA
D. USA and France
5 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
6 Split rings act as
A. Vibrator
B. Resistor
C. Motor
D. Commulator
7 The phenomenon of generation of induced emf is called
A. Electrostatic induction
B. Magnetic induction
C. Electromagnetic induction
D. Electric induction
8 Referring to above figure, current in coil P falls from its maximum value to zero
A. At the instant the switch is closed
B. At the instant the switch is opened
C. When switch is kept open
D. When switch is kept closed
9 The change of magnetic flux through a circuit will produce
A. Magnetic Field
B. Electric Field
C. emf
D. a.c
10 A device which converts Electrical energy into mechanical energy is called as
A. Transformer
B. Generator
C. Motor
D. All of these

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