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

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

Question # 3

When there is no relative motion between the magnet and coil, the galvanometer indicated

Question # 4

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

Question # 5

The motional e.m.f depends upon the

Question # 6

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

Question # 7

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

Question # 8

The induced current in a conductor depends upon:

Question # 9

The phenomenon of generation of induced emf is called:

Question # 10


The magnitude of induced emf depends upon the:

Question # 11

The induced current in the loop can be Increased by

Question # 12

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 # 13

The product of induced current and the resistance of the wire through which the current is passing is called:

Question # 14

An emf is set up in a conductor when it:

Question # 15

Back emf is produced due to

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 For inducting emf in a coil the basic requirement is that:
A. Flux should link the coil
B. Change in flux should link the coil
C. Coil should form a closed loop
D. Both B and C are true
2 An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic feild
D. Constant electric field
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 A.C. can be measure with the help of
A. Nuclear effect
B. Magnetic effect
C. Chemical effect
D. Heating effect
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 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
7 A device which converts Electrical energy into mechanical energy is called as
A. Transformer
B. Generator
C. Motor
D. All of these
8 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
9 The SI unit of magnetic induction is
A. Weber
B. Weber/meter
C. Henry
D. Tesla
10 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

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