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

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

Question # 2

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

Question # 3

The induced emf in a coil is proportional to:

Question # 4

The phenomenon of generation of induced emf is called:

Question # 5

Plan of a coil makes an angle of 20º with the lines of magnetic field. The angle between B and vector area of plane of coil is:

Question # 6

Lenz's law is the consequence of

Question # 7

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 # 8

The magnitude of induced emf depends upon the:

Question # 9

The law of electromagnetic induction is related to:

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

The induced current in the loop can be increased by:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 Transformer is used to
A. Increase alternating current
B. Increase d.c voltage
C. Increase & Decrease emf
D. All answers are right
2 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
3 The current produced by moving a loop of wire across a magnetic field is called
A. Direct current
B. Magnetic current
C. Alternating current
D. Induced current
4 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
5 The law of electromagnetic induction is related to:
A. Coulomb
B. Ampere
C. Faraday
D. Lenz
6 A device which converts Electrical energy into mechanical energy is called as
A. Transformer
B. Generator
C. Motor
D. All of these
7 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
8 The unit of induced emf is:
A. Volt
B. Nm/As
C. Joule coul-1
D. Both A and C
9 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
10 The direction of induced current is always so as to oppose the cause which produces it. This is
A. Lenz's law
B. Ampere's law
C. Faraday's law
D. Coulomb's law

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