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Electromagnetic Field Theory

Electromagnetic Field Theory
The magnetic intensity in A/m at the centre of circular coil of diameter 1m and carrying a current of 2A is

 8.
 3.
 2.
 4.

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Electromagnetic Field Theory
When a conductor moves in the field, so that it makes an angle 8 with the lines of flux, the force F is given as : F = Bl sin2 0.

No
Yes

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Electromagnetic Field Theory
Poyniting vector has the dimensions

 Watt × metre2.
 Watt/metre.
 Watts/metre2.
 Watt × metre.

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Electromagnetic Field Theory
The potential that appears at a point in space due to the current which caused it is called potential

Lagging the current
Oscillating
Retardation
Accelerating

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Electromagnetic Field Theory
A long straight wire carries a current I = 10A. At what distance is the magnetic field H = 1A/m?

 1.59 m.
 1.19 m.
 1.29 m.
 1.39 m.

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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)

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

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