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
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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..
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