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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?

2.4 At
24 At
240 At
2,400 At

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Magnetism and Electromagnetism
The magnetism left in the iron after exciting field has been removed is known as

susceptance
reluctance
permeance
residual magnetism

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Magnetism and Electromagnetism
The bar magnet has

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

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Magnetism and Electromagnetism
The induced voltage across a stationary conductor in a stationary magnetic field is

increased
reversed in polarity
zero
decreased

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Magnetism and Electromagnetism
Degaussing is the process of

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

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Magnetism and Electromagnetism
If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density

doubles
increases
remains the same
decreases

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MORE MCQ ON Magnetism and Electromagnetism

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