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Electromagnetic Field Theory

Electromagnetic Field Theory
The magnetic vector potential due to a single conductor carrying current is

 infinite.
 finite.
 none of tha above.
 zero.

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Electromagnetic Field Theory
As a result of reflection from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater than the velocity of light in space. This is called the

 velocity of propagation.
 group velocity.
 phase velocity.
 normal velocity.

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Electromagnetic Field Theory
In a lossless medium the intrinsic impedance η = 60π and μr = 1. The relative dielectric constant εr shall be

 4.
 8.
 1.
 2.

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Electromagnetic Field Theory
The electric field on a plane is decribed by . The field due to

 a monopole.
 none of above.
 a dipole and a monopole.
 a dipole.

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Electromagnetic Field Theory
A plane wave magnetic field is represented by Bx = cos(y – ct). The electric and magnetic fields will be zero in the direction

 Ex = Ey = 0, By = Bz = 0.
 Ey = Ez = 0, By = Bz = 0.
 None of these.
 Ex = Ey = 0, Bx = By = 0.

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Electromagnetic Field Theory
A fan blade of length 2R rotates in a time period T in a magnetic field B. The induced voltage in the blade is proportional to

 RBT.
 2RBT.
 R2BT.
 R2B / T.

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