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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Tesla is a unit of

Field strength
Inductance
Flux
Flux density

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Magnetism and Electromagnetism
If a loop in a basic dc generator suddenly begins rotating at a faster speed, the induced voltage

reverses polarity
increases
decreases
remains unchanged

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Magnetism and Electromagnetism
The unit for permeability is

Wb/At × m
At/Wb
At/m
Wb

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Magnetism and Electromagnetism
The unit of relative permeability is

Hennry
Its dimensionless
None of the listed here
Hennry/meter

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Magnetism and Electromagnetism
The ability of a material to remain magnetized after removal of the magnetizing force is known as

permeability
hysteresis
retentivity
reluctance

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

24 AT
240 AT
2.4 AT
0.24 AT

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MORE MCQ ON Magnetism and Electromagnetism

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