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Electromagnetic Field Theory

Electromagnetic Field Theory
Which of the following represents ohms law

 V = RI
 I = GV
All of these
 J = σE

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Electromagnetic Field Theory
Which antenna is a wideband antenna?

Marconi antenna
None of these
Hertz antenna
Folded dipole

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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

 50.
 10.
 20.
 5.

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Electromagnetic Field Theory
An infinite non conducting sheet of charge has σ of 10-7 c/m3. Equipotential surface for a potential of 10 volts is.

 0.
 1.32 mm.
  1.77 mm.
 0.88 mm.

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Electromagnetic Field Theory
The force experienced by a current carrying conductor lying parallel to a magnetic field is

 BIL.
 Bil cosθ.
 zero.
 Bil sinθ.

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Electromagnetic Field Theory
The transmitting antennas for lower frequencies (below 500 kHz) are generally

Parabolic reflector type
Vertical grounded wire type
Horizontal suspended wire type
Any of the above

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MORE MCQ ON Electromagnetic Field Theory

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