Electromagnetic Field Theory
An electric dipole of moment P is placed in front of a ground sphere. The change induced on the surface of the sphere is (Assume radius of sphere = R and distance from dipole to centre of sphere = d)

 Zero.
 PR/d.
 PR/d2.
 PR 2/d3.

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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 is the complex conjugate of the other
The impedance of one of the networks is half that of the other
The impedance of one is equal to that of the other

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