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

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Question # 1

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

Question # 2

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

Question # 3

The self induction emf is some times called.

Question # 4

The jerks in D.C. motor are created by the use of.

Question # 5

The magnitude of back emf:

Question # 6

Commentator was invented by

Question # 7

A real transformer does not change.

Question # 8

Michael Faraday and Joseph Henry belongs to

Question # 9

When back emf in motor is zero, it draws.

Question # 10

In A.C. inductor behaves as

Question # 11

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

Question # 12

In case of inductor , energy is stored in the

Question # 13

Lenz's law deals with

Question # 14

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

Question # 15

The induced emf in a coil is proportional to:

Question # 16

A.C. Generator based upon the

Question # 17

The only difference between the construction of D.C and A.C is.

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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 The movement of conductor in magnetic field produces electrical current was discovered in:
A. 1931
B. 1731
C. 1842
D. 1831
2 Energy density of an inductor is:
A. UM=1/2μ/B2
B. Um = 2μ/B
C. UM = 1/2B2
D. Um = 2B2
3 Lenz's law is a consequence of the law of conservation of
A. Charge
B. Momentum
C. Energy
D. Angular momentum
4 The unit of induced emf is
A. Ampere
B. Volt
C. Joule/coulomb
D. Both (b) and (c)
5 A.C. Generator based upon the
A. Lenz's law
B. Maxwell's relation
C. Faradays law of electromagnet induction
D. Mutual induction
6 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
7 The illustration of the phenomenon of mutual induction is in the device of
A. Transformer
B. Inductor
C. A.C. Generator
D. Ammeter
8 A.C is converted into D.C by
A. Dynamo
B. Rectifier
C. Motor
D. Transformer
9 DC generator by william Sturgeon in:
A. 1894
B. 1961
C. 1834
D. 1961
10 Electromagnetic induction is exactly according to law of:
A. Momentum
B. Charge
C. Energy
D. Mass

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