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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Substances which have permeability less than the permeability of free space are known as

Bipolar
Diamagnetic material
Ferro magnetic material
Paramagnetic material

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Magnetism and Electromagnetism
What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it?

100 At
300 At
150 At
200 At

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

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Magnetism and Electromagnetism
The unit for reluctance is

tesla
Wb
At/m
At/Wb

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Magnetism and Electromagnetism
The direction of magnetic lines of force is

From one end of the magnet to another
From south pole to north pole
None of the listed here
From north pole to south pole

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

None of the listed here
Dielectric
Ferromagnetic
Diamagnetic

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MORE MCQ ON Magnetism and Electromagnetism

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