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

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

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

 If is gradient of a scalar potential.
 The potential difference between two points is zero.
 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 ground surface.
 Midway between the conductor and ground.
 The lower surface of the conductor.
 The upper surface of the conductor.

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