Question

two electric point charges q, and 2q are kept at a distance d apart from each other is air. a third charge Qis to be kept along the same line in such a way that the net force acting on q and 2q is zero, Calculate the position of charge Q in terms of d
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Answer 1

Electric Charges and Fields. Two point electric charges of values q and 2q are kept at a distance d apart from each other in air. A third charge Q is to be kept along the same line in such a way that the net force acting on q and 2q is zero.