Question

28. Two similarly and equally charged identical metal
spheres A and B repel each other with a force
of 2 x 10-5 N. A third identical, uncharged
sphere C is touched with A and then placed at
the mid-point between A and B. What is the net
electric force on C?
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Answer 1

Answer:

it is 0 because both balls act equal force in opposite sides cancelling force