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

00:00
Question # 1

Step up transformer is used.

Question # 2

Commentator was invented by

Question # 3

A simple device that prevents the direction of current from changing is called.

Question # 4

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

Question # 5

When the back emf is zero, its draws.

Question # 6

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

Question # 7

The self induction emf is some times called.

Question # 8

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

Question # 9

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

Question # 10

Electromagnetic induction is exactly according to law of:

Question # 11

One henry is equal to

Question # 12

Efficiency of transformer does not affected by

Question # 13

The mutual inductance between two coils depends upon their

Question # 14

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

Question # 15

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

Question # 16

Lenz's law presented in

Question # 17

A.C. Generator based upon the

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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 A.C. Generator based upon the
A. Lenz's law
B. Maxwell's relation
C. Faradays law of electromagnet induction
D. Mutual induction
3 The  Lenz's law is also statement of:
A. Law of conservation of mass
B. Law of conservation of charge
C. Law of conservation of energy
D. Law of conservation of momentum
4 Self inductance of a long solenoid is given by
D. None of the above
5 Commentator was invented by
A. Henry
B. Ousted
C. Maxwell
D. William sturgeon
6 SI unit of hennery which is.
A. VSA-1
B. VS-1 A
C. VS-1A-1
D. VSA
7 The direction of induced current is always so as to oppose the change which causes the current is:
A. Faraday's law
B. Lenz's  law
C. Ohm's law
D. Kirchhoff's 1st rule
8 If D.C. input for step up transformer, the output is
A. Zero
B. High
C. Low
D. May be high or low
9 If we make magnetic field stronger the value of induced current is.
A. Decreased
B. Increased
C. Vanishes
D. Remain constant
10 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

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