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Electromagnetic Field Theory

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

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

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Electromagnetic Field Theory
What is the unit of magnetic charge

 Ampere-meter square.
 Coulomb.
  Ampere meter.
 Ampere.

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Electromagnetic Field Theory
A circular ring is carrying uniformly distributed charge q and a point charge – Q on the axis of the ring. The magnitude of dipole moment of the charge system is (Assume distance between centre of ring and point charge is d and radius of ring R)

 Q√(R2 + d2).
 QR.
 QR2/d.
  QD.

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Electromagnetic Field Theory
Tropospheric scatter is used with frequencies in the

UHF
VLF
VHF
HF

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Electromagnetic Field Theory
The magnetic vector potential due to a single conductor carrying current is

 none of tha above.
 finite.
 infinite.
 zero.

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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)

 None of above.
 (103/377) sin(ωt - β z)(-uy) A/m.
  (103/377) sin(ωt - β z)(-ux) A/m.
 (103/377) cos(ωt - β z)(-ux) A/m.

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