Electric field at a point varies as `r^(0)` for

Electric field intensity at a point varies as r^(-3) for

Electric field intensity at a point varies as r^(-3) for

The electric field at a point at a distance r from an electric dipole is proportional to ......

The electric field at a point at a distance r from an electric dipole is proportional to ......

A uniform but time varying magnetic field B(t) exist in a circular region of radius a and is directed into the plane of the paper as shown. The magnitude of the induced electric field at point P at a distance r form the centre of the circular region.

A uniform but time varying magnetic field B(t) exist in a circular region of radius a and is directed into the plane of the paper as shown. The magnitude of the induced electric field at point P at a distance r form the centre of the circular region.