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MAGNETISM AND ELECTROMAGNETISM

Magnetism and Electromagnetism
Which of the following is a vector quantity?

Relalative permeability
Magnetic field intensity
Magnetic potential
Flux density

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Magnetism and Electromagnetism
Magnetism of a magnet can be destroyed by

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

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Magnetism and Electromagnetism
What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it?

150 At
100 At
200 At
300 At

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

Tesla
Weber
All of the listed here
Maxwell

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

Temporary Magnet
Permanent magnet
Weak magnet
None of the listed here

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