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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials.

None of the listed here
circular
triangular
rectangular

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Magnetism and Electromagnetism
Gilbert is a unit of

magnetomotive force
conductance
electromotive force
permittivity

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Magnetism and Electromagnetism
For a given wirewound core, an increase in current through the coil

causes no change in flux density
reverses the flux lines
decreases the flux density
increases the flux density

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Magnetism and Electromagnetism
A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ?

633.8 N/Wb
63.38 N/Wb
63380 N/Wb
6338 N/Wb

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

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Magnetism and Electromagnetism
One telsa is equal to

1 Wb/m²
1 Wb/m
1 Wb/mm²
1 mWb/m²

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MORE MCQ ON Magnetism and Electromagnetism

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