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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Which of the following is the unit of magnetic flux density?

Weber
Lumens
Tesla
None of the listed here

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Magnetism and Electromagnetism
Which of the following is expected to have the maximum permeability ?

Copper
Ebolite
Brass
Zinc

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Magnetism and Electromagnetism
Magnetism of a magnet can be destroyed by

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

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

zero
decreased
reversed in polarity
increased

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

240 At
24 At
2.4 At
2,400 At

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Magnetism and Electromagnetism
The unit for reluctance is

At/Wb
tesla
At/m
Wb

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