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Magnetism and Electromagnetism

Magnetism and Electromagnetism
The magnetic materials exhibit the property of magnetisation because of

spin of nucleus
spin of electrons
either of these
orbital motion of electrons

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Magnetism and Electromagnetism
For which of the following materials the net magnetic moment should be zero?

diamagnetic materials
ferrimagnetic materials
antiferrimagnetic materials
antiferromagnetic materials

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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
Ferrites are materials.

Ferromagnetic
Paramagnetic
Diamagnetic
None of the listed here

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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

Remain same
None of the listed here
Increases
Decreases

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Magnetism and Electromagnetism
What is the magneto-motive force (mmf) of a wire with 8 turns carrying three amperes of current?

240 At
2.4 At
24 At
2,400 At

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MORE MCQ ON Magnetism and Electromagnetism

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