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Electromagnetic Field Theory

Electromagnetic Field Theory
Unit of electric flux density is

 farad / meter.
 weber / meter2.
 coulomb.
 coulomb / meter2.

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Electromagnetic Field Theory
If n is the polarization vector and k is the direction of propagation plane electromagnetic wave, then

 n = - k.
 n × k = 0.
 n = K.
 n. k = 0.

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

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Electromagnetic Field Theory
The frequency of the power wave associated with an electromagnetic wave having field as E = e-z/δ cos(ω - zδ) is given by

 ω.
 ω/2π.
 ω/4π.
 ω / π.

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Electromagnetic Field Theory
What is the unit of magnetic charge

 Ampere-meter square.
  Ampere meter.
 Coulomb.
 Ampere.

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Electromagnetic Field Theory
A magnetic field B = 5 × 10-2 uz T exerts a force on 0.02 m conductor along the x-axis. The conductor carried a current of 5 mA in the – ux direction. What force must be applied to the conductor to hold it in position

 5 × 10-5 uz N.
 5 × 10-5 uy N.
  - 5 × 10-5 uy N.
 5 × 10-5 ux N.

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