Electromagnetic Field Theory
A conductor is rotating with in a magnetic field. At which of the positions do the peak voltages occur?

 At an angle of 45° to the axis of the magnetic field.
 Anywhere.
 Along the axis of the magnetic field.
 At right angles to the axis of the magnetic field.

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Electromagnetic Field Theory
Which statement does not say that electrostatic field is conservative?

 The potential difference between two points is zero.
 If is gradient of a scalar potential.
 The work done in a closed path inside the fields is zero.
 If the curl of E is identically zero.

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Electromagnetic Field Theory
A long wire composed of a smooth round conductor runs above and parallel to the ground (assumed to be a large conducting plane). A high voltage exits between the conductor and the ground. The maximum electric stress occur at

 The lower surface of the conductor.
 Midway between the conductor and ground.
 The ground surface.
 The upper surface of the conductor.

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