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

In a coil current change from 2 to 4 A in .05 s. If the average induced emf is 8V then coefficient of self-inductance is:

Question # 2

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 # 3

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

Question # 4

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

Question # 5

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

Question # 6

Transformer is used to

Question # 7

The motional e.m.f depends upon the

Question # 8

The work is stored in the inductor as

Question # 9

What is the coefficient of mutual inductance, when the magnetic flux changes by 2 X 10-2Wb, and change in current is 0.01 A?

Question # 10

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

Question # 11

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

Question # 12

The change of magnetic flux through a circuit will produce

Question # 13

Split rings act as

Question # 14

Micheal Faraday and joseph Henry belong respectively to:

Question # 15

When the conductor moved across a magnetic field:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The practical application of the phenomenon of Mutual induction is
A. Transformers
B. Generator
C. Motor
D. All of these
2 The work is stored in the inductor as
A. Electric potential energy
B. Elastic potential energy
C. Magnetic energy
D. Absolute potential energy
3 Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current:
A. Of same magnitude in the same direction
B. Of different magnitude in the same direction
C. Of same magnitude but in opposite direction
D. Of different magnitude in the opposite direction
4 An emf is set up in a conductor when it:
A. is kept in a magnetic field
B. is kept in a electric field
C. Move across a magnetic field
D. Both (A) and (B)
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 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
7 Back emf is produced due to
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law
8 Motional emf is called motional:
A. Electromagnetic force and is measured in newtons
B. Electromotive force and is measured in volt
C. Electromotive force and is measured in newtons
D. Electromagnetic force and is measured in volts
9 Split rings act as
A. Vibrator
B. Resistor
C. Motor
D. Commulator
10

An induced current can be produced by:

A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field

Test Questions

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