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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Temporary magnets are used in

Motors
All of the listed here
Loud speakers
Generators

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Magnetism and Electromagnetism
The main constituent of permalloy is

Tungsten
Chromium
Nickel
Cobalt

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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?

2.4 At
240 At
2,400 At
24 At

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Magnetism and Electromagnetism
Tesla is a unit of

Flux
Field strength
Inductance
Flux density

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Magnetism and Electromagnetism
Magnetism of a magnet can be destroyed by

Heating
By inductive action of another magnet
Hammering
All of the listed here

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Magnetism and Electromagnetism
Ferrites are materials.

None of the listed here
Diamagnetic
Ferromagnetic
Paramagnetic

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MORE MCQ ON Magnetism and Electromagnetism

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