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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MCQ's Test For Chapter 0 "Physics ICS Part 2 Chapter 15 Online MCQ's Test"

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Physics ICS Part 2 Chapter 15 Online MCQ's Test

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Question # 1

A real transformer does not change.

Question # 2

Commentator was invented by

Question # 3

The mutual inductance between two coils depends upon their

Question # 4

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

Question # 5

Which of the following converts electrical energy into mechanical energy.

Question # 6

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:

Question # 7

The working principle of transformer is.

Question # 8

Transformer is used to change

Question # 9

If a step up transformer were 100% efficient the primary and secondary winging's would have the same.

Question # 10

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

Question # 11

Lenz's law was given by Heinrich lenz in:

Question # 12

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

Question # 13

The Si unit of Mutual inductance is:

Question # 14

Lenz's law presented in

Question # 15

The application of mutual induction is a.

Question # 16

split rings are used in

Question # 17

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

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FSc Part II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 The induced emf in a coil is proportional to:
A. Magnetic flux through the coil
B. Rate of change of Magnetic flux through the coil
C. Area of the coil
D. Product of magnetic flux flux and area of the coil
2 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
3 Mutual induction play role in.
A. Generator
B. D.C. motor
C. Galvanometer
D. Transformer
4 When the back emf is zero, its draws.
A. Zero current
B. Minimum current
C. Maximum current
D. Steady current
5 Eddy current is one cause energy loss in
A. A.C. generator
B. Transformer
C. D.C. motor
D. D.C. generator
6 Commutator was invented by:
A. William bills
B. William Gates
C. William tells
D. William Sturgeon
7 The motional emf depends upon the
A. Length of conductor
B. Speed of conductor
C. Strength of magnet
D. All of these
8 Induced emf in A.C. generator can be increased by
A. Decreasing area of coil
B. Decreasing magnetic field
C. Increasing area of coil
D. Slowing down speed of coil
9 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
10 The device in which induced emf is statically induced emf is:
A. Transforms
B. AC generator
C. Alevator
D. Dynamo

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