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Magnetism and Electromagnetism

Magnetism and Electromagnetism
A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will

Increase
Remain Constant
Decrease
Be excessive

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Magnetism and Electromagnetism
The materials are a bit inferior conductors of magnetic flux than air.

Diamagnetic
Ferromagnetic
None of the listed here
Dielectric

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Magnetism and Electromagnetism
What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart ?

22 x 10-6 N
22 x 10"8 N
22 x 10"5 N
22 x 10"7 N

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Magnetism and Electromagnetism
The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is

proportional to distance between the conductors
proportional to X
proportional to 7
inversely proportional to I

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Magnetism and Electromagnetism
A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be

2M
M/2
M/4
M

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Magnetism and Electromagnetism
The magnetism left in the iron after exciting field has been removed is known as

residual magnetism
permeance
susceptance
reluctance

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MORE MCQ ON Magnetism and Electromagnetism

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