Electromagnetic Field Theory
Between a hollow and solid metal sphere, charge reside

 on outer surface in both.
 None of above.
 on outer surface in hollow and throughout in solid.
 on outer surface in hollow and throughout in solid

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Electromagnetic Field Theory
In microwave communication links, when fading due to rain attenuation occurs then technique adopted for solving the problem would include

Amplitude timing and phase correction
Polarization shifting and code diversity
Path diversity and frequency diversity
Antenna replacement and feed correction

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Electromagnetic Field Theory
If an electric current carrying coil is placed in a uniform magnetic field in the direction of magnetic induction, then

 the net force is zero but torque is finite.
 the net force and torque on the coil are both zero.
 the net force and torque are both finite.
 the net force is finite but torque is zero.

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