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Electromagnetic Field Theory

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
In above problem the induced emf will be reduced to half if the conductor moves an angle of

  30° to the direction of field.
  45° to the direction of field.
  75° to the direction of field.
  60° to the direction of field.

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Electromagnetic Field Theory
In an iron core coil the iron core is removed so that the coil becomes an air core coil. The inductance of the coil will

 decrease.
 initially increase and then decrease.
 remain the same.
 increase.

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Electromagnetic Field Theory
The field at any point on the axis of a current carrying coil will be

 perpendicular to the axis.
 at angle of 45° with the axis.
 zero.
 parallel to axis.

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Electromagnetic Field Theory
RF inductor are characterized by

 high current rating and high resistance.
 high current rating and low resistance.
 low current rating and low resistance.
 low current rating and high resistance.

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Electromagnetic Field Theory
Electric field inside a hollow metallic charged sphere is

 none of above.
 increasing towards centre.
 decreasing towards centre.
 zero.

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MORE MCQ ON Electromagnetic Field Theory

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