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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Gilbert is a unit of

permittivity
electromotive force
conductance
magnetomotive force

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Magnetism and Electromagnetism
Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be

0.01 N
100 N
0.1 N
10 N

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Magnetism and Electromagnetism
A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be

0.24 N
240 N
24 N
2.4 N

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Magnetism and Electromagnetism
The materials having low retentivity are suitable for making

Permanent magnet
Temporary Magnet
None of the listed here
Weak magnet

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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?

300 AT
30 AT
0.3 AT
3 AT

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Magnetism and Electromagnetism
Degaussing is the process of

Removal of magnetic impurities
Remagnetising metallic parts
Removing gases from the materials
Demagnetising metallic parts

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MORE MCQ ON Magnetism and Electromagnetism

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