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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Magnetic moment is a

universal constant
scalar quantity
pole strength
vector quantity

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Magnetism and Electromagnetism
If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density

increases
decreases
doubles
remains the same

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Magnetism and Electromagnetism
Ferrites are a sub-group of

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

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Magnetism and Electromagnetism
When two ends of a circular uniform wire are joined to the terminals of a battery, the field at the center of the circle

will depend on the radius of the circle
will depend on the amount of e.m.f. applied
will be zero
will be infinite

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Magnetism and Electromagnetism
The unit of flux is the same as that of

Pole strength
Resistance
Reluctance
Permanance

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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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MORE MCQ ON Magnetism and Electromagnetism

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