Two equally charged small metal balls placed at a fixed distance experience a force F . A similar uncharged metal ball after touching one of them is placed at the middle point between the two balls. The force experienced by this ball is

Question

Two equally charged small metal balls placed at a fixed distance experience a force F . A similar uncharged metal ball after touching one of them is placed at the middle point between the two balls. The force experienced by this ball is, F 2, F, 2 F, 4 F

MARKS App · Accepted Answer

Initially, F A B = 1 4 π ε 0 . q . q r 2 = 1 4 π ε 0 . q 2 r 2 Finally, force on C F C = F C B - F C A = 1 4 π ε 0 . q 2 q r 2 2 - 1 4​πε​​​ 0 . q 2 q 2 r 2 2 = 1 4 π​ ε​ 0 . q 2 r 2 So F C = F A B = F

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