Question

obtain the equation of electric field at a point by system of 'n' point charge​

Answer 1

Explanation:

Here r1P , r2P ,r3P ..........rnP are the distance of the the charges q1 , q2 ,q3 .......... qn from the point respectively. Also ^r1P , ^r2P , ^r3P ..........r ^nP are the corresponding unit vectors directed from q1, q2 ,q3 ..........qn to P.