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

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

Question # 2

The practical application of the phenomenon of Mutual induction is

Question # 3

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

Question # 4

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

Question # 5

Split rings act as

Question # 6

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

Question # 7

When a conductoris moved across a magnetic field:

Question # 8

Which of the following is most suitable as the core of transformer

Question # 9

The induced current in the loop can be Increased by

Question # 10

The phenomenon of generation of induced emf is called

Question # 11

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

Question # 12

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

Question # 13

Lenz's law is the consequence of

Question # 14

Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current:

Question # 15

Self inducede e.m.f. is also called

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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 When a conductor is moved across a magnetic field, the redistribution of charge sets up:
A. Magnetic field
B. Electrostatic field
C. Electromagnetic field
D. All of these
3 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
4 When there is no relative motion between the magnet and coil, the galvanometer indicated
A. No current in the circuit
B. An increasing current
C. A decreasing current
D. A constant current
5 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
6 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
7

An induced current can be produced by:
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field
8 When the conductor moved across a magnetic field:
A. Emf induced is similar to that of a battery

B. Emf induced gives rise to induced current

C. An emf induced across its ends

D. All are correct
9 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
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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