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Electromagnetic Field Theory

Electromagnetic Field Theory
Ohm’s law in point from field theory can be expressed as

 J = E / σ.
 R = ρ × ( l / A).
 V = IR.
 J = σE.

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Electromagnetic Field Theory
Two straight parallel conductors carry equal currents in opposite direction. The force between them is

 repulsive.
 zero.
 none of above.
 attractive.

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

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

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Electromagnetic Field Theory
MUF is depend upon

Height of ionospheric layer
11 year sun spot cycle
Electron density of the ionospheric layer
Received frequency by receiver

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Electromagnetic Field Theory
The useful magnetic flux obtainable from any closed surface is

Both A and B
Constant
None of these
Unity

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Electromagnetic Field Theory
Two parallel plates are separated by a distance D charged by V volt. The field intensity E is given by,

 V / D
 V × D²
 V² / D
 V × D

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MORE MCQ ON Electromagnetic Field Theory

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