ECAT Pre General Science Physics Chapter 15 Electromagnetic Induction

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  • Chapter NameCh 15 - Electromagnetic Induction

ECAT Pre General Science Physics Chapter 15 Electromagnetic Induction

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ECAT Pre General Science Physics Chapter 15 Electromagnetic Induction

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Question # 1

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

Question # 2

The SI unit of magnetic induction is

Question # 3

The device in which induced emf is statically induced emf is:

Question # 4

The induced current in a conductor depends upon:

Question # 5

Lens's law deals with the

Question # 6

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:

Question # 7

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

Question # 8


The magnitude of induced emf depends upon the:

Question # 9

The practical application of the phenomenon of Mutual induction is

Question # 10

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

Question # 11

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

Question # 12

The phenomenon of generation of induced emf is called:

Question # 13

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 # 14

Eddy current is produced when:

Question # 15

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

Question # 16

Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:

Question # 17

An induced current can be produced by:

Question # 18

An induced current can be produced by

Question # 19

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 # 20

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

Question # 21

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 # 22

The induced current is a conductor depends upon:

Question # 23

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

Question # 24

An emf is set up in a conductor when it:

Question # 25

Self inducede e.m.f. is also called

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

The magnitude of induced emf depends upon the:

Question # 30

The law of electromagnetic induction is related to:

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