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

EMF is induced due to change in

Question # 2

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

Question # 3

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

Question # 4

B2/2p is the expression of.

Question # 5

Energy density of an inductor is:

Question # 6

The motional emf developed in a conduction depends upon.

Question # 7

split rings are used in

Question # 8

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

Question # 9

In D.C. generator, split rings act as.

Question # 10

The Si unit of Mutual inductance is:

Question # 11

By winding the coil around a less magnetic core, self induction.

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Eddy current is produced when:

Question # 16

Commutator was invented by:

Question # 17

The self induction emf is some times called.

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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 Self inductance of a long solenoid is given by
D. None of the above
2 Michael Faraday and Joseph Henry belongs to
A. England and USA
B. France and USA
C. China and USA
D. None of these
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 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
5 The emf induced by the motion of a conductor across a magnetic field is called:
A. Motional emf
B. Rotational emf
C. Induced emf
D. All of above
6 Mutual induction has a practical role in the performance of the.
A. Radio choke
B. Transformers
C. A.C. Generator
D. D.C. Generator
7 A metal rod of 1 m is moving at a speed of 1 ms-1 in a direction making an angle 30 o with 0.5 T magnetic field . The emf produced is.
A. 0.25 N
B. 2.5 N
C. 0.25 V
D. 2.5 V
8 The movement of conductor in magnetic field produces electrical current was discovered in:
A. 1931
B. 1731
C. 1842
D. 1831
9 Eddy current is produced when:
A. A metal is light in varying magnetic field
B. A metal is kept in steady magnetic field
C. A circular coil is placed in a steady magnetic field
D. A current is passed through a circualr coil
10 Step up transfer has a transformation ratio of 3:2. What is the voltage in secondary , If voltage in primary is 30 V?
A. 45 V
B. 15 V
C. 90 V
D. 300 V

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