Electromagnetic Field Theory
According to Coulomb’s law, the force of attraction or repulsion, between to electrical charges is

 inversely proportional to the square of the distance between them.
 directly proportional to the distance between them.
 inversely proportional to the distance between them.
 directly proportional to the square of the distance between them.

ANSWER DOWNLOAD EXAMIANS APP

Electromagnetic Field Theory
Gradient of scalar field is expressed as

 Circulation of a vector field per unit area as the area tends to zero.
 Outward flux of a vector field per unit volume as the volume about the point tends to zero.
 Gradient of divergence of a vector field minus the curl of the vector field.
 Maximum rate of increase of scalar function at a point.

ANSWER DOWNLOAD EXAMIANS APP