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ELECTROMAGNETIC FIELD THEORY

Electromagnetic Field Theory
In a dielectric material an applied field in x direction Ex = 5 v/m gives a polarization of px = 3/10π ux nc/m2. The susceptibility of the material is

 4.32.
 Infinity.
 Zero.
  2.16.

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Electromagnetic Field Theory
A pure inductor is connected across a voltage source. Find the active power drawn by the inductor?

 maximum
None of these
 either 1 or 2
 0

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Electromagnetic Field Theory
In free space E (z, t) = 103 sin(ωt - βz) uy v/m. What is the value of H (z, t)

 (103/377) sin(ωt - β z)(ux) A/m.
 None of above.
 (103/377) cos(ωt - β z)(-ux) A/m.
 (103/377) sin(ωt - β z)(-ux) A/m.

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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

 2.
 8.
 1.
 4.

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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

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

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