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

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

Question # 2

The current induced can be increased by:

Question # 3

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

Question # 4

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 # 5

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

Question # 6

Eddy current is one cause energy loss in

Question # 7

The emf induced by the motion of a conductor across a magnetic field is called:

Question # 8

The magnitude of back emf:

Question # 9

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

Question # 10

The jerks in D.C. motor are created by the use of.

Question # 11

The motional emf depends upon the

Question # 12

The mutual inductance between two coils depends upon their

Question # 13

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 # 14

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

Question # 15

In case of inductor , energy is stored in the

Question # 16

Induced emf in A.C. generator can be increased by

Question # 17

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

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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 Electromagnetic induction is exactly according to law of:
A. Momentum
B. Charge
C. Energy
D. Mass
2 A 50 mH coil carries a current of 2.0 a , then energy stored in tis magnetic field is.
A. 0.1 J
B. 10 J
C. 100 J
D. 1000 J
3 For step down transformer
A. Ns>Np
B. Np > Ns
C. Ns = Np
D. Ns > > > Np
4 The illustration of the phenomenon of mutual induction is in the device of
A. Transformer
B. Inductor
C. A.C. Generator
D. Ammeter
5 Transformer is used to change
A. Electric power
B. Magnetic field
C. Alternating voltage
D. Phase of A.C.
6 Unit of self inductance is
A. Weber
B. Tesla
C. Henry
D. Farad
7 The only difference between the construction of D.C and A.C is.
A. Carbon burshes
B. Coil
C. Commutator
D. Magnetic field
8 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
9 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
10 When the back emf is zero, its draws.
A. Zero current
B. Minimum current
C. Maximum current
D. Steady current

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