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Magnetism and Electromagnetism

Magnetism and Electromagnetism
The unit for permeability is

At/Wb
At/m
Wb
Wb/At × m

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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

increases
remains unchanged
reverses polarity
decreases

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

reluctance
permeability
retentivity
hysteresis

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Magnetism and Electromagnetism
Which of the following is not a unit of flux?

Tesla
All of the listed here
Weber
Maxwell

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Magnetism and Electromagnetism
The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is

inversely proportional to I
proportional to distance between the conductors
proportional to 7
proportional to X

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Magnetism and Electromagnetism
The materials having low retentivity are suitable for making

Weak magnet
None of the listed here
Temporary Magnet
Permanent magnet

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MORE MCQ ON Magnetism and Electromagnetism

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