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 the loop can be Increased by

Question # 2

Motional emf is called motional:

Question # 3

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 # 4

An emf is set up in a conductor when it:

Question # 5

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?

Question # 6

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

Question # 7

The work is stored in the inductor as

Question # 8

Eddy current is produced when:

Question # 9

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

Question # 10

An induced current can be produced by:

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

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

Question # 13

An emf is set up in a conductor when it

Question # 14

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

Question # 15

The law of electromagnetic induction is related to:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 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
4 The work is stored in the inductor as
A. Electric potential energy
B. Elastic potential energy
C. Magnetic energy
D. Absolute potential energy
5 Self inducede e.m.f. is also called
A. Motional e.m.f.
B. Thermistor
C. Electrostatic induction
D. Back e.m.f
6 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
7 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:
A. 0.2 henry
B. 0.1 henry
C. 0.8 henry
D. 0.04 henry
8 An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic feild
D. Constant electric field
9 Motional emf is called motional:
A. Electromagnetic force and is measured in newtons
B. Electromotive force and is measured in volt
C. Electromotive force and is measured in newtons
D. Electromagnetic force and is measured in volts
10 Transformer is used to
A. Increase alternating current
B. Increase d.c voltage
C. Increase & Decrease emf
D. All answers are right

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