2nd Year Physics Chapter 15 Online MCQ Test for 12th Class Physics Chapter 15 (Electromagnetic Induction)

ICS Part 2 Physics
Chapter 15 Test

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Physics ICS Part 2 Chapter 15 Online MCQ's Test

00:00
Question # 1

If we make magnetic field stronger the value of induced current is.

Question # 2

The current induced can be increased by:

Question # 3

The unit of induced emf is

Question # 4

The Direction of induced current is always so as to oppose the change which causes the current, is:

Question # 5

When the back emf is zero, its draws.

Question # 6

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

Question # 7

For step down transformer

Question # 8

A.C. Generator based upon the

Question # 9

Energy density of an inductor is:

Question # 10

In A.C. inductor behaves as

Question # 11

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

Question # 12

Self induction does not depend on

Question # 13

Electromagnetic induction is exactly according to law of:

Question # 14

Electric current produces magnetic field, was suggested by.

Question # 15

Commutator was invented by:

Question # 16

The device in the circuit that consume electrical energy are known as.

Question # 17

When a conductor moves across a magnetic field an emf is set up this emf is called.

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ICS 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 Unit of self inductance is
A. Weber
B. Tesla
C. Henry
D. Farad
2 The motional emf depends upon the
A. Length of conductor
B. Speed of conductor
C. Strength of magnet
D. All of these
3 A.C. Generator based upon the
A. Lenz's law
B. Maxwell's relation
C. Faradays law of electromagnet induction
D. Mutual induction
4 The direction of induced current is always so as to oppose the change which causes the current is:
A. Faraday's law
B. Lenz's  law
C. Ohm's law
D. Kirchhoff's 1st rule
5 Mutual induction has a practical role in the performance of the.
A. Radio choke
B. Transformers
C. A.C. Generator
D. D.C. Generator
6 The emf induced by the motion of a conductor across a magnetic field is called:
A. Motional emf
B. Rotational emf
C. Induced emf
D. All of above
7 The induction can be increased by winding the wire around a core made of.
A. Copper
B. Silicon
C. Iron
D. Aluminum
8 In a coil current change from 2 to 4 A in .05 s . If the average induced emf is 8 V then coefficient of self-inductance is:
A. 0.2 henry
B. 0.1 henry
C. 0.8 henry
D. 0.04 henry
9 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
10 If the coil is wound on iron core, the flux through it.
A. Decreases
B. Becomes zero
C. Increases
D. Remains constant

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