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

A 50 mH coil carries a current of 2.0 a , then energy stored in tis magnetic field is.

Question # 2

If force in the direction of velocity of conductor,  then induced current is directed,

Question # 3

Unit of self inductance is

Question # 4

When the back emf in a current is zero, it draws

Question # 5

Commentator was invented by

Question # 6

Energy stored in inductor is.

Question # 7

The Lenz's law fulfils.

Question # 8

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

Question # 9

With the speed of motor, magnitude of back emf

Question # 10

Electromagnetic induction is exactly according to law of:

Question # 11

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 # 12

The motional emf developed in a conduction depends upon.

Question # 13

If speed of rotation of a generator is doubled the output voltage will be.

Question # 14

Lenz's law presented in

Question # 15

Michael Faraday and Joseph Henry belongs to

Question # 16

When a coil is moved in a uniform magnetic field, an induced emf is produced due of change in

Question # 17

The north pole of a magnet is brought near a metallic ring. The direction of induced current in the ring will be:

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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 Energy stored in an inductor is:
A. 1/2L2I
B. 1/2L2/I
C. 1/2LI2
D. 1/2LI
2 The only difference between the construction of D.C and A.C is.
A. Carbon burshes
B. Coil
C. Commutator
D. Magnetic field
3 The induction can be increased by winding the wire around a core made of.
A. Copper
B. Silicon
C. Iron
D. Aluminum
4 The working principle of transformer is.
A. Self induction
B. Faraday's law
C. Mutual induction
D. Electromagnetic induction
5 Lenz's law is a consequence of the law of conservation of
A. Charge
B. Momentum
C. Energy
D. Angular momentum
6 The Si unit of Mutual inductance is:
A. VA-1S-1
B. VAS-1
C. VSA-1
D. ASV-1
7 1 Henry =
A. VSA-1
B. VS-1A-1
C. V-1SA
D. VSA-2
8 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
9 The illustration of the phenomenon of mutual induction is in the device of
A. Transformer
B. Inductor
C. A.C. Generator
D. Ammeter
10 Which one is not present in A.C. generator.
A. Armature
B. Magnet
C. Slip rings
D. Commutator

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