The top of the atomosphere is about 400 kV with respect to the surface of earth, corresponding to an electric field that decreases with altitude. Near the surface of earth the field is about 100 V `m^(-1),` but still don't get an electric shock, as we set out of out houses in to open because (assume the house is free from electric field)

Options

A. there is a potential difference between our body and the ground
B. `100 Vm^(-1)` is not a high electric field so that we do not feel the shock
C. our body and the ground forms an equipotential surface
D. the atmosphere is not a conductor.

Answer

D

Explanation

Dry atmosphere is not a conductor. Only when the voltage in clouds increases to a very large value and there is moisture in the air, the lightening strikes the ground. 400 volts is not very high voltage that it will not strike the ground.