Two particles A and B having charges and respectively are held fixed with a separation of

PHYSICS · Subjective · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Two particles A and B having charges

8.0 \times 10^{-6}\,\text{C}

and

-2.0 \times 10^{-6}\,\text{C}

respectively are held fixed with a separation of

20\,\text{cm}

. Where should a third charged particle be placed so that it does not experience a net electric force?