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Electromagnetic Field Theory

Electromagnetic Field Theory
If E is the electric field intensity, then what is the value of divergence of (curl of E)?

 Zero.
 Null vector.
 E.
 | E |.

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Electromagnetic Field Theory
A point charge in space is attracted towards a dielectric material because of the

 phenomenon of dielectric polarisation.
 all of above.
 maximisation of electrostatic flux.
 dielectric hysteresis.

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Electromagnetic Field Theory
A magnetic vector potential is given by the expression A = (- cos x) (cos y) uz. The flux density at the origin is

 2 ux.
 – 2 ux.
 – uy.
  0.

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Electromagnetic Field Theory
The work done by a force F = 4un - 3uy + 2uz N in giving a 1nC charge a displacement of (10 ux + 2uy - 7uz) m is

 60 nj.
 20 nj.
 40 nj.
 100 nj.

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Electromagnetic Field Theory
A pure inductor when connected across 220 V, 50 Hz supply consumes 100 W. From the above statement it can be concluded that

 the inductor has ferrite core.
 the inductor is non linear.
 the inductor is made of thin wire.
 the above statement is false.

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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

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

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MORE MCQ ON Electromagnetic Field Theory

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