ECAT Pre Engineering Physics Chapter 15 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

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Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

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Question # 1

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 # 2

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

Question # 3

Lens's law deals with the

Question # 4

The phenomenon of generation of induced emf is called:

Question # 5

The induced current is a conductor depends upon:

Question # 6

The induced emf in a coil is proportional to:

Question # 7

An emf is set up in a conductor when it:

Question # 8

The phenomenon of generation of induced emf is called

Question # 9

The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called

Question # 10

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

Question # 11

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

Question # 12

An induced current can be produced by

Question # 13

Michael Faraday and Joseph Henry belong respectively to

Question # 14

Micheal Faraday and joseph Henry belong respectively to:

Question # 15

Transformer is used to

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The phenomenon of generation of induced emf is called:
A. Electrostatic induced
B. Magnetic induced
C. Electromagnetic induced
D. Electric induced
2 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
3 The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called
A. Mutual induction
B. Mutual inductance
C. Capacitance
D. Self inductance
4 A square loop of wire is moving through a uniform magnetic field. The normal to the loop is oriented parallel to the magnetic field. The emf induced in the loop is:
A. Zero
B. Of smaller magnitude
C. Of larger magnitude
D. Sometimes B, sometimes C
5 When a conductoris moved across a magnetic field:
A. Emf induced its similar to that of a battery
B. Emf induced gives rise to induced current
C. An emf is induced across its ends
D. All are correct
6 Back emf is produced due to
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law
7
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
8 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
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 the coil
C. Relative motion of the loop and magnet
D. Any one of above
10 Which of the following quantities remain constant in step up transformer?
A. Current
B. Voltage
C. Power
D. Heat

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