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Electromagnetic Field Theory

Electromagnetic Field Theory
Skin depth is proportional to

 1/√σ.
 Frequency.
 Permeability.
 √(σ).

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Electromagnetic Field Theory
A circular loop has its radius increasing at a rate of 2 m/s. The loop placed perpendicular to a constant magnetic field of 0.5 wb/m2. When the radius of the loop is 4 m. the emf induced in the will be

 0.4 π V.
 0.8 π V.
 8 π V.
 Zero.

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Electromagnetic Field Theory
Which of the following is zero in relation to electromagnetic fields?

 Div grad V.
 Curl curl A.
 Div curl A.
 Grad div A.

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Electromagnetic Field Theory
Between a hollow and solid metal sphere, charge reside

 on outer surface in hollow and throughout in solid.
 on outer surface in hollow and throughout in solid
 None of above.
 on outer surface in both.

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Electromagnetic Field Theory
Materials subjected to rapid reversals of magnetism should have

 both a and b.
 low hysteresis loss.
 low permeability.
 high permeability.

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Electromagnetic Field Theory
________ at a point is defined as the force experienced per unit positive charge at a point placed in the electric field.

 Electric intensity.
 Electric flux.
None of these
 Magnetic flux density.

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MORE MCQ ON Electromagnetic Field Theory

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