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

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

Question # 2

The motional emf developed in a conduction depends upon.

Question # 3

The rod of unit length is moving at 30 o through a magnetic field of 1 T. If the velocity of rod is 1 m/s, then induced emf in the rod will be given by

Question # 4

Which of the following quantities remain constant in step up transformer?

Question # 5

EMF is induced due to change in

Question # 6

When motor is just started, back emf is almost.

Question # 7

The negative sign with induced emf in Faraday's law is in accordance with

Question # 8

If magnetic field is doubled then magnetic energy density becomes.

Question # 9

Commentator was invented by

Question # 10

Energy stored in inductor is.

Question # 11

split rings are used in

Question # 12

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

Question # 13

Electromagnetic induction obeys law of conservation

Question # 14

One henry is equal to

Question # 15

In case of inductor , energy is stored in the

Question # 16

Eddy current is one cause energy loss in

Question # 17

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

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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 SI unit of hennery which is.
A. VSA-1
B. VS-1 A
C. VS-1A-1
D. VSA
2 Self inductance of a long solenoid is given by
D. None of the above
3 Energy density in an inductor is.
A. Directly proportional to magnetic field
B. Directly proportional to square of magnetic field
C. Inversely proportional to magnetic field
D. Inversely proportional to square of magnetic field
4 Mutual induction play role in.
A. Generator
B. D.C. motor
C. Galvanometer
D. Transformer
5 Transformer is used to change
A. Electric power
B. Magnetic field
C. Alternating voltage
D. Phase of A.C.
6
Question Image
7 When a conductor moves across a magnetic field an emf is set up this emf is called.
A. Variable emf
B. Constant emf
C. Back emf
D. Induced emf
8 Energy stored in an inductor is:
A. 1/2L2I
B. 1/2L2/I
C. 1/2LI2
D. 1/2LI
9 If speed of rotation of a generator is doubled the output voltage will be.
A. Remain same
B. Double
C. Four time
D. One half
10 Commutator was invented in
A. 1834
B. 1820
C. 1840
D. 1835

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