Electromagnetic Field Theory
The magnitude of force acting on a current carrying conductor placed in a magnetic field is independent of

 flux density.
 length of conductor.
 cross-sectional area of conductor.
 current flowing through the conductor.

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Electromagnetic Field Theory
Inside a hollow conducting sphere

 electric field is zero.
 electric field changes with magnitude of the charge given to the conductor.
 electric field is a non zero constant.
 electric field changes with distance from the center of the sphere.

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Electromagnetic Field Theory
The wave in wave guide has

Diminishing wavelength than in the free space
Group velocity inversely proportional to wavelength
Larger wavelength than in the free space
Larger frequency than in the free space

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