Electric Field Intensity at a point on the axial line of an electric dipole   This position is also known as ‘End-on position’.   What is an axial line? Axial line is the line joining the centres of positive and negative charges forming an electric dipole.   Consider an electric dipole consisting of +q … Read more

Electric Dipole in a uniform electric field Consider an electric dipole in a uniform electric field which is due to some other source.The dipole moment ( ) makes an angle θ with the electric field () as shown in Figure. The forces on charges +q and -q are qE and -qE respectively. The magnitude of … Read more

Electric dipole and its physical significance A pair of two equal and opposite charges separated by some distance is called an electric dipole. Example:Two charges + q and -q separated by a small distance 2l constitute an electric dipole as shown in figure. The distance (2l) between two charges is known as dipole length. Total … Read more

Electric field intensity due to a point charge Consider a fixed point charge Q at the origin O.Let q be the test charge placed in a medium at a distance r from origin in the electric field of the charge Q. Then force on charge q due to point charge Q is given by Therefore,electric … Read more