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

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

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Electromagnetic Field Theory
According to maximum power transfer theorem, the maximum power is absorbed by one network from another network when

None of these
The impedance of one of the networks is half that of the other
The impedance of one is equal to that of the other
The impedance of one is the complex conjugate of the other

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Electromagnetic Field Theory
A copper disc is rotated rapidly below a freely suspended magnetic needle. The magnetic needle starts rotating with velocity

 equal to that of disc and in the opposite direction.
 equal to that of disc and in the same direction.
 less than that of disc and in the same direction.
 less than that of disc but in opposite direction.

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