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

The induced emf in a coil is proportional to:

Question # 2

When the back emf is zero, its draws.

Question # 3

One henry is equal to

Question # 4

The device in which induced emf is statically induced emf is:

Question # 5

Commentator was invented by

Question # 6

Energy density in an inductor is.

Question # 7

The current induced can be increased by:

Question # 8

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

Question # 9

Electromagnetic induction is exactly according to law of:

Question # 10

Lenz's law presented in

Question # 11

the core of transformer is laminated so reduce.

Question # 12

Electromagnetic induction obeys law of conservation

Question # 13

The  Lenz's law is also statement of:

Question # 14

In A.C. generator , when plane of coil is perpendicular to magnetic field, then output of generator is.

Question # 15

The Si unit of Mutual inductance is:

Question # 16

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

Question # 17

Lenz's law was given by Heinrich lenz in:

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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 B2/2p is the expression of.
A. Lenz's law
B. Magnetic energy
C. Magnetic energy density
D. Back emf
2 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
3 Output of D.C. motor is
A. A.C. energy
B. Mechanical energy
C. Chemical energy
D. D.C. energy
4 The application of mutual induction is a.
A. D.C. motor
B. Radio
C. Television
D. Transformer
5 A.C is converted into D.C by
A. Dynamo
B. Rectifier
C. Motor
D. Transformer
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 For step down transformer
A. Ns>Np
B. Np > Ns
C. Ns = Np
D. Ns > > > Np
8 A real transformer does not change.
A. Voltage level
B. Current level
C. Power level
D. Frequency
9 In D.C. generator, split rings act as.
A. Capacitor
B. Commutator
C. Resistor
D. Inductor
10 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

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