Second Year Physics Chapter 15 Online MCQ Test for 2nd Year Physics Chapter 15 Electromagnetic Induction Preparation

FSC Part 2 Physics
Chapter 15 Test

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Physics FSC Part 2 Chapter 15 Online MCQ's Test

00:00
Question # 1

1 Henry =

Question # 2

Electromagnetic induction obeys law of conservation

Question # 3

When the back emf is zero, its draws.

Question # 4

Which one is not present in A.C. generator.

Question # 5

Lenz's law was given by Heinrich lenz in:

Question # 6

The negative sign with induced emf in Faraday's law is in accordance with

Question # 7

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

Question # 8

Output of D.C. motor is

Question # 9

In case of inductor , energy is stored in the

Question # 10

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

Question # 11

Michael Faraday and Joseph Henry belongs to

Question # 12

A.C. Generator based upon the

Question # 13

The unit of induced emf is

Question # 14

Eddy current is produced when:

Question # 15

If magnetic field is doubled then magnetic energy density becomes.

Question # 16

The  Lenz's law is also statement of:

Question # 17

The north pole of a magnet is brought near a metallic ring. The direction of induced current in the ring will be:

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FSC 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 With the speed of motor, magnitude of back emf
A. Remain same
B. Increase
C. Decrease
D. First increases then decreases
2 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
3 A step up transformer is used 120 V line to provide 240 V. If primary coil has 100 turns the number of turns is secondary is.
A. 50
B. 100
C. 150
D. 200
4 Michael Faraday and Joseph Henry belongs to
A. England and USA
B. France and USA
C. China and USA
D. None of these
5 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
6 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
7 The induction can be increased by winding the wire around a core made of.
A. Copper
B. Silicon
C. Iron
D. Aluminum
8 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
A. I V
B. 0.25 V
C. 0.5 V
D. 0.6 V
9 When the back emf is zero, its draws.
A. Zero current
B. Minimum current
C. Maximum current
D. Steady current
10 The winding of the electromagnet in motor are usually called.
A. Magnetic coils
B. Field coils
C. Electric coils
D. electric o electric coils

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