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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Indicate which of the following material does not retain magnetism permanently.

Stainless steel
Hardened steel
None of the listed here
Soft iron

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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 X
proportional to distance between the conductors
proportional to 7

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Magnetism and Electromagnetism
Magnetic moment is a

universal constant
pole strength
vector quantity
scalar quantity

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

30 At
300 At
187 At
18.75 At

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Magnetism and Electromagnetism
One telsa is equal to

1 Wb/mm²
1 mWb/m²
1 Wb/m²
1 Wb/m

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Magnetism and Electromagnetism
Ferrites are a sub-group of

Paramagnetic material
Ferri-magnetic material
Non-magnetic materials
Ferro magnetic material

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MORE MCQ ON Magnetism and Electromagnetism

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