(i) Three equak charge `q_(0)` each are placed at three corners of an equilateral triangle of side 'a'. Find out dorce acting on one of the charge due to other two charges ?
(ii) In the above question, if one of the charge is replaced by negative charge then find out force acting on it due to other charges ?
(iii) Repeat the part (i) if magnitude of each charge is doubled and side of triangle is reduced to half.

Answer

(i) `(sqrt(3) Kq_(0)^(2))/a^(2)`, away from the charges along perpendicular bisector of line joining remaining two charges.
(ii) `(sqrt(3) Kq_(0)^(2))/a^(2)`; towards the charges along perpendicular bisector of line joining remaining two charges.
(iii) `(16sqrt(3)Kq_(0)^(2))/a^(2)`; away from the charges along angle bisector.