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Electromagnetic Field Theory

Electromagnetic Field Theory
For an inductor, current is proportional to

 both (A) and (B).
 voltage across the inductor.
 magnetic field.
 none of them.

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Electromagnetic Field Theory
Voltage applied across a dielectric produces an electrostatic field 50 times greater than air. The dielectric constant of the dielectric will be

 5.
 20.
 10.
 50.

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Electromagnetic Field Theory
Two point charges (Q and – Q) are situated at the vertex of the square. If potential at another vertex is 2 V, so potential at opposite vertex (diagonally) is

  2 V.
 Zero.
 1 V.
 √ 2 V.

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Electromagnetic Field Theory
A loop antenna is a commonly used for

Radar
Direction finding
Satellite communication
All of these

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Electromagnetic Field Theory
A negative point charge q = - 40 nC is moving with velocity of 6 × 106 m/s in a direction specited by unit vector uy + 0.6 uz. Find the magnitude of force vector on the moving particle by the field B = 2 ux + 3 uy + 5 uz mT and E = 2 ux - 3 uy + 5 uz KV/m

 244 μN.
  1144 μN.
 1440 μN.
 144 μN.

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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.
 1.1304 μH.
 37.68 μH.
 3.768 μH.

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MORE MCQ ON Electromagnetic Field Theory

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