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Electromagnetic Field Theory

Electromagnetic Field Theory
Skin depth is proportional to

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

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Electromagnetic Field Theory
Midway between two equal and similar charges, a third equal and similar charge is placed, then this third charge will

 not be equilibrium.
 be in unstable equilibrium.
 will move out of the field of influence of two charges.
 remain in stable equilibrium.

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Electromagnetic Field Theory
In an impedance smith chart, a clockwise movement along a constant resistance circle gives rise to

No change in the reactance value
An increase in the value of reactance
No change in the impedance value
Decrease in the value of reactance

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Electromagnetic Field Theory
A long straight wire carries a current I = 10A. At what distance is the magnetic field H = 1A/m?

 1.59 m.
 1.19 m.
 1.29 m.
 1.39 m.

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Electromagnetic Field Theory
What is the value of total electric flux coming out of a closed surface?

 Equal to the surface charge density.
 Equal to total charge enclosed by the surface.
 Zero.
 Equal to volume change density.

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Electromagnetic Field Theory
The shape of B-H curve for air gap is

 hyperbola.
 parabola.
 ellipse.
 straight line.

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MORE MCQ ON Electromagnetic Field Theory

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