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Electromagnetic Field Theory

Electromagnetic Field Theory
Two straight parallel conductors carry equal currents in opposite direction. The force between them is

 none of above.
 repulsive.
 zero.
 attractive.

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Electromagnetic Field Theory
XEROX machine is working on

 electrostatic effect.
 peltier effect.
 magnetic effect.
 heating effect of current.

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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.

 1.32 mm.
 0.88 mm.
  1.77 mm.
 0.

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Electromagnetic Field Theory
Two parallel plates are separated by a distance D charged by V volt. The field intensity E is given by,

 V × D
 V × D²
 V / D
 V² / D

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Electromagnetic Field Theory
The magnetic field required to reduce the residual magnetism to zero is called

 Saturation magnetism.
 Coercivity.
 Hysteresis.
 Retentivity.

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Electromagnetic Field Theory
Self inductance of magnetic coil is proportional to

 N2.
 1 / N.
 1 / N2.
 N.

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MORE MCQ ON Electromagnetic Field Theory

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