Question

a charge q is placed at the centre of the line joining the equal charges Q the system of three charges will be in equilibrium if q is equal to ​

Answer 1

Answer:

q = - Q/4

Explanation:

let the distance between the two Q's be x , calculate the force between them , now when a third charge q is placed at x/ 2 , then the system will be in equilibrium only when the force between Q's and the force between Q and q are equal and opposite in nature..