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

Electromagnetic induction is exactly according to law of:

Question # 2

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 # 3

A.C is converted into D.C by

Question # 4

Which one is not present in A.C. generator.

Question # 5

If the north pole of a magnet moves away from a metallic ring

Question # 6

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

Question # 7

EMF is induced due to change in

Question # 8

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

Question # 9

When motor is just started, back emf is almost.

Question # 10

Unit of self inductance is

Question # 11

SI unit of hennery which is.

Question # 12

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

Question # 13

If D.C. input for step up transformer, the output is

Question # 14

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

Question # 15

For inducing emf in a coil the basic requirement is that:

Question # 16

The illustration of the phenomenon of mutual induction is in the device of

Question # 17

When back emf in motor is zero, it draws.

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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 Eddy current is one cause energy loss in
A. A.C. generator
B. Transformer
C. D.C. motor
D. D.C. generator
2 The Lenz's law fulfils.
A. Law of conservation of energy
B. Law of conservation of charge
C. Law of conservation of momentum
D. Kirchhoff's law
3 By winding the coil around a less magnetic core, self induction.
A. Will increase
B. Will decrease
C. Remain same
D. First increase then decrease
4 A.C is converted into D.C by
A. Dynamo
B. Rectifier
C. Motor
D. Transformer
5 One henry is equal to
A. 1 ohm x 1 sec
B. 1 ohm x 1 hertz
C. 1 ohm x 1 metre
D. All of above
6 The illustration of the phenomenon of mutual induction is in the device of
A. Transformer
B. Inductor
C. A.C. Generator
D. Ammeter
7 B2/2p is the expression of.
A. Lenz's law
B. Magnetic energy
C. Magnetic energy density
D. Back emf
8 A simple device that prevents the direction of current from changing is called.
A. Commutator
B. Rotor
C. Armature
D. Detector
9 If the north pole of a magnet moves away from a metallic ring
A. Clockwise
B. Anticlockwise
C. First clockwise and then anticlockwise
D. None of above
10 Michael Faraday and Joseph Henry belongs to
A. England and USA
B. France and USA
C. China and USA
D. None of these

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