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[" 18.Two equal charges of "-10^(-16)C" ...

[" 18.Two equal charges of "-10^(-16)C" each are kept on "20cm" apart in air."],[" Calculate: (a) electric field at a point midway between them."],[[" (b) force acting ona charge of "-10^(-16)" C kept at point midway "," (Ans.zero,zero) "]," between them."]

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