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.
 - 100 μ v/m.
 0.

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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

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
None of these

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Electromagnetic Field Theory
According to Coulomb’s law, the force of attraction or repulsion, between to electrical charges is

 inversely proportional to the square of the distance between them.
 directly proportional to the distance between them.
 inversely proportional to the distance between them.
 directly proportional to the square of the distance between them.

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