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Magnetism and Electromagnetism

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

24 At
2.4 At
240 At
2,400 At

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Magnetism and Electromagnetism
Gilbert is a unit of

magnetomotive force
electromotive force
conductance
permittivity

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Magnetism and Electromagnetism
What is the flux density in a magnetic field in which the flux in 0.1 m2 is 600 Wb?

6 T
6,000 T
600 T
600 T

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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

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

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Magnetism and Electromagnetism
The ratio of intensity of magnetisation to the magnetisation force is known as

None of the listed here
Relatice permeability
Flux density
Susceptibility

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Magnetism and Electromagnetism
Indicate which of the following material does not retain magnetism permanently.

Stainless steel
Hardened steel
Soft iron
None of the listed here

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MORE MCQ ON Magnetism and Electromagnetism

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