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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MCQ's Test For Chapter 0 "Physics ICS Part 2 Chapter 15 Online MCQ's Test"

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Physics ICS Part 2 Chapter 15 Online MCQ's Test

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Question # 1

A.C. Generator based upon the

Question # 2

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

Question # 3

Step up transfer has a transformation ratio of 3:2. What is the voltage in secondary , If voltage in primary is 30 V?

Question # 4

One henry is equal to

Question # 5

When a motor is over loaded then the magnitude of back emf.

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

Step up transformer is used.

Question # 10

The  Lenz's law is also statement of:

Question # 11

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

Question # 12

The induction can be increased by winding the wire around a core made of.

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

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

Question # 15

The mutual inductance of the coils depends upon.

Question # 16

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.

Question # 17

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

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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 When the back emf in a current is zero, it draws
A. Zero current
B. Maximum current
C. Minimum current
D. Steady average current
2 Energy density of an inductor is:
A. UM=1/2μ/B2
B. Um = 2μ/B
C. UM = 1/2B2
D. Um = 2B2
3 For inducing emf in a coil the basic requirement is that:
A. Flux should link the coil
B. Change in flux should link the coil
C. Coil should form a closed loop
D. Both (b) and (c) are true
4 In self induction A coil is connected in__________ with battery and a rheostat.
A. Parallel
B. Series
C. Both A and B
D. None of above
5 Michael Faraday and Joseph Henry belongs to
A. England and USA
B. France and USA
C. China and USA
D. None of these
6 The movement of conductor in magnetic field produces electrical current was discovered in:
A. 1931
B. 1731
C. 1842
D. 1831
7 The unit of induced emf is
A. Ampere
B. Volt
C. Joule/coulomb
D. Both (b) and (c)
8 The mutual inductance of the coils depends upon.
A. Stiffness of the coils
B. Density of coils
C. Material of coils
D. Geometry of the coils
9 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
10
Question Image
A. Lenz's law
B. Faraday's law
C. Ampere's law
D. None of these

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