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Magnetism and Electromagnetism

Magnetism and Electromagnetism
What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200?

6
12
4
8

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Magnetism and Electromagnetism
What is the mmf of a wire with 8 turns carrying three amperes of current?

2.4 AT
240 AT
24 AT
0.24 AT

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Magnetism and Electromagnetism
When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon

Motion of the magnet
Number of turns of the coil
Resistance of the coil
Pole strength of the magnet

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Magnetism and Electromagnetism
The bar magnet has

Dipole moment
Monopole moment
None of the listed here
Both dipole and monopole moment

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Magnetism and Electromagnetism
Ferrites are materials.

None of the listed here
Paramagnetic
Diamagnetic
Ferromagnetic

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

30 At
300 At
18.75 At
187 At

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MORE MCQ ON Magnetism and Electromagnetism

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