Electromagnetic Field Theory
Biot-Savarts law states the relation between magnetic intensity and

 filament current only.
 surface current only.
 (A), (B), and (D) are all correct.
 volume current only.

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Electromagnetic Field Theory
Two spheres of radius r1 and r2 are connected by a conducting wire. Each of the spheres has been given a charge Q. Now

 larger sphere will have smalled potential.
 smaller sphere will have zero potential.
 larger sphere will have greater potential.
 both of sphere will have same potential.

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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
Antenna replacement and feed correction
Polarization shifting and code diversity
Path diversity and frequency diversity

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