Physics

Principle of Superposition - Physics Class 12

Electric Field due to a Discrete Distribution of Charge(Principle of Superposition)--

It states that electric field at any point due to a group of charges is equal to the vector sum of the electric fields produced by each charge individually at that point, when all oter charges are assumed to be absent.

Let us consider that n point charges q1, q2, q3……..are distributed in space in discrete manner.

The net electric field at point P will be,

Electric Dipole - Physics Class 12

Electric Dipole

When two equal and opposite charges are placed at a small distance, the combination is called a electric Dipole.

 

The strength of dipole is measured by Dipole Moment, a vector quantity, whose magnitude is equal to product of either charge and distance between the two charges and has the direction along the negative to positive charge.

Pages