Second Year Physics Chapter 15 Online MCQ Test for 2nd Year Physics Chapter 15 Electromagnetic Induction Preparation

FSC Part 2 Physics
Chapter 15 Test

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Physics FSC Part 2 Chapter 15 Online MCQ's Test

00:00
Question # 1

If the coil is wound on iron core, the flux through it.

Question # 2

The direction of induced current is always so as to oppose the change which causes the current, this is the statement of

Question # 3

If 10 A current passes through 100 mH inductor, then energy stored is.

Question # 4

The magnitude of motional emf is given by

Question # 5

A real transformer does not change.

Question # 6

The current induced can be increased by:

Question # 7

The magnitude of back emf:

Question # 8

The induction can be increased by winding the wire around a core made of.

Question # 9

A step up transformer is used 120 V line to provide 240 V. If primary coil has 100 turns the number of turns is secondary is.

Question # 10

Commutator was invented by:

Question # 11

Lenz's law is a consequence of the law of conservation of

Question # 12

Output of D.C. motor is

Question # 13

With the speed of motor, magnitude of back emf

Question # 14

Eddy current is produced when:

Question # 15

split rings are used in

Question # 16

Mutual induction has a practical role in the performance of the.

Question # 17

Lenz's law deals with

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FSC Part 2 Physics Chapter 15 Online Test MCQ's

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 Energy density of an inductor is:
A. UM=1/2μ/B2
B. Um = 2μ/B
C. UM = 1/2B2
D. Um = 2B2
2 If 10 A current passes through 100 mH inductor, then energy stored is.
A. 100 J
B. 5 J
C. 20 J
D. Zero
3 For inducing 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
4
Question Image
A. Lenz's law
B. Faraday's law
C. Ampere's law
D. None of these
5 The  Lenz's law is also statement of:
A. Law of conservation of mass
B. Law of conservation of charge
C. Law of conservation of energy
D. Law of conservation of momentum
6 1 Henry =
A. VSA-1
B. VS-1A-1
C. V-1SA
D. VSA-2
7 B2/2p is the expression of.
A. Lenz's law
B. Magnetic energy
C. Magnetic energy density
D. Back emf
8 The application of mutual induction is a.
A. D.C. motor
B. Radio
C. Television
D. Transformer
9 When a coil is moved in a uniform magnetic field, an induced emf is produced due of change in
A. Flux density
B. Electric flux
C. Magnetic flux
D. Magnetic field strength
10 Lenz's law is a consequence of the law of conservation of
A. Charge
B. Momentum
C. Energy
D. Angular momentum

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  • sania  saeed

    sania saeed

    16 Nov 2017

    ye log poore number nai dete jan bhooj kar

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  • ayesha

    ayesha

    11 May 2017

    2 mcqs k ans ghalat hain irrespective k wo book ki statements hain

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