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Electromagnetic Field Theory

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

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

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Electromagnetic Field Theory
MUF is depend upon

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

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Electromagnetic Field Theory
A charge which when placed in vacuum from an equal and similar charge repels with a force of 9 × 103 N, is known as

 micro - coulomb.
 milli - coulomb.
 pico - coulomb.
 coulomb.

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Electromagnetic Field Theory
Find the strength of the magnetic field when a 2m long conductor is moving with a velocity 4m/s inducing an emf of 20V.

 0.5T.
 10T.
 2.5T.
 5T.

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Electromagnetic Field Theory
Between a hollow and solid metal sphere, charge reside

 on outer surface in hollow and throughout in solid
 None of above.
 on outer surface in both.
 on outer surface in hollow and throughout in solid.

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Electromagnetic Field Theory
A coil of 300 turns is wound on a non magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The inductance of the coil corresponding to a magnetizing current of 6 A will be

  113.04 μH.
 37.68 μH.
 1.1304 μH.
 3.768 μH.

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MORE MCQ ON Electromagnetic Field Theory

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