Electromagnetic Field Theory
The electrical field strength at a distance point A due to a point charge +q, located at the origin, is 100 µl v/m. If the point charge is now enclosed by a perfectly conducting metal sheet sphere whose centre is at origin, A, outside the sphere, becomes

 None of above.
 - 100 μ v/m.
 0.
 100 μ v/m.

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

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

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

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