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Electromagnetic Field Theory

Electromagnetic Field Theory
Find the length of a conductor which is moving with a velocity 0.4m/s in a magnetic field of 8T, inducing an emf of 20V.

 0.5m.
 0.6m.
 5.25m.
 6.25m.

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Electromagnetic Field Theory
The force on a charge moving with velocity v under the influence of electric and magnetic fields is given by which one of the following

 q(E + B × V).
 q(H + V × E).
 q(E +V × H).
 q(E + V × B).

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Electromagnetic Field Theory
Which is the major factor for determining whether a medium is free space, lossless dielectric or a good conductor

 Attenuation constant.
  Loss tangent.
 Constitutive parameters.
 Reflector coefficient.

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Electromagnetic Field Theory
If the static magnetic flux density is B, then

 Curl of B = 0.
  Divergence of B = 0.
 Curl of B = J.
 Divergence of B = J.

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Electromagnetic Field Theory
Fleming's right hand rule may be applied to an electric generator to find out the direction of

 induced emf.
None of these
 magnetic field.
 rotor rotation.

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Electromagnetic Field Theory
A magnetic material has a total flux B of 80 micro Wb with an mmf of 160 AT. The reluctance in ampere turn per weber is

 2 × 108.
 2 × 10-8.
 2 × 10-6.
 2 × 106.

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