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

One henry is equal to

Question # 2

The Lenz's law fulfils.

Question # 3

the core of transformer is laminated so reduce.

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

The rod of unit length is moving at 30 o through a magnetic field of 1 T. If the velocity of rod is 1 m/s, then induced emf in the rod will be given by

Question # 8

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

Question # 9

If the coil is wound on iron core, the flux through it.

Question # 10

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

Question # 11

Electromagnetic induction is exactly according to law of:

Question # 12

The movement of conductor in magnetic field produces electrical current was discovered in:

Question # 13

Efficiency of transformer does not affected by

Question # 14

Electric current produces magnetic field, was suggested by.

Question # 15

Electromagnetic induction obeys law of conservation

Question # 16

Lenz's law was given by Heinrich lenz in:

Question # 17

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

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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 A current generator device converts:
A. Mechanical energy into chemical energy
B. Chemical energy into electrical energy
C. Mechanical energy into electrical energy
D. Both b and c
2 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?
A. 2 H
B. 3 H
C. 1/2 H
D. Zero
3 If the north pole of a magnet moves away from a metallic ring
A. Clockwise
B. Anticlockwise
C. First clockwise and then anticlockwise
D. None of above
4 Self inductance of a long solenoid is given by
D. None of the above
5 Commutator was invented by:
A. William bills
B. William Gates
C. William tells
D. William Sturgeon
6 When the back emf in a current is zero, it draws
A. Zero current
B. Maximum current
C. Minimum current
D. Steady average current
7 The current induced can be increased by:
A. Using a stronger magnetic field
B. Moving the loop faster
C. Replacing the loop bay coi of many turns
D. All of above
8 EMF is induced due to change in
A. Charge
B. Current
C. Magnetic flux
D. Electric field
9 The direction of induced current is always so as to oppose the change which causes the current, this is the statement of
A. Lenz's law
B. Faraday's law
C. Ampere's law
D. Coulomb's law
10 When motor is just started, back emf is almost.
A. Maximum
B. Zero
C. Minimum
D. Infinite

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