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

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

Question # 2

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 # 3

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

Question # 4

Back emf is produced due to

Question # 5

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

Question # 6

The magnitude of induced emf depends upon the:

Question # 7

A device which converts Electrical energy into mechanical energy is called as

Question # 8

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

Question # 9

An induced current can be produced by:

Question # 10

The SI unit of magnetic induction is

Question # 11

In magnet-coil experiment, emf can be produced by

Question # 12

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

Question # 13

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

Question # 14

An induced current can be produced by:

Question # 15

When a conductor moved with its length parallel to the lines of magnetic fled:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The unit of induced emf is:
A. Volt
B. Nm/As
C. Joule coul-1
D. Both A and C
2 Lenz's law is the consequence of
A. Mass
B. Energy conservation
C. Momentum conservation
D. Charge
3 An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic feild
D. Constant electric field
4 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
5 Transformer is used to
A. Increase alternating current
B. Increase d.c voltage
C. Increase & Decrease emf
D. All answers are right
6 The induced current in the loop can be Increased by
A. Using a stronger magnetic field
B. Moving the loop faster
C. Replacing the loop by a coil of many turns
D. All above
7 The product of induced current and the resistance of the wire through which the current is passing is called:
A. Electromagnetic induction
B. induced emf
C. Induced current
D. Self induced
8 The SI unit of magnetic induction is
A. Weber
B. Weber/meter
C. Henry
D. Tesla
9 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
C. Relative motion of the loop and magnet
D. Any one of above
10 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 and induced current in coil S
D. All of these

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