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Electromagnetic Field Theory

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

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

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Electromagnetic Field Theory
If the resistance of a conductor does not vary in accordance with the Ohms law it is known as

 bad conductor.
 non - conductor.
 non - linear conductor.
 reverse conductor.

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Electromagnetic Field Theory
What is the value of skin depth as 100 Hz in a material having μr = 1.0 and & σ = 3.60 × 107 s/m

 10 mm.
 2.4 mm.
 8.4 mm.
 4 mm.

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Electromagnetic Field Theory
Two infinite parallel metal plates are charged with equal surface charge density of the same polarity. The electric field in the gap between the plates is

 zero.
 dependent on coordinates of field points.
 same as that produced by one plate.
 double the field produced by one plate.

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Electromagnetic Field Theory
Which of following can induce the maximum induced voltage ?

 20 amp dc.
 1 amp 100 Hz.
 1 amp dc.
 1 amp 1 Hz.

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Electromagnetic Field Theory
In frec 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)(-uy) A/m.
 (103/377) cos(ωt - β z)(-ux) A/m.
 None of above.
  (103/377) sin(ωt - β z)(-ux) A/m.

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