The unit of electric flux density is

If all the flux from the current in coil 1 links with coil 2, the coefficient of coupling will be:

If a wire of resistivity ρ is stretched to double its length, then its new resistivity will:

How is the directivity of an isotropic antenna related to the beam area?

Attenuation constant and Phase constant of EM waves are 5.6 Np/m and 12.54 rad/m Find out phase difference between Electric field and magnetic field ?

Which one of the following is not necessarily an advantage of D.C. motors over A.C. motors?

The intensity of the magnetic field at a distance of 10 cm from a long straight wire carrying a current of 20 amperes is:

What does zero permeability or permittivity imply?

Inside a hollow conducting sphere,

The electric charges are distributed in a small volume. The electric flux through a spherical surface of radius 10 cm surrounding the total charge is 20 V⋅m. The electric flux through a concentric sphere of radius 20 cm will be: