Two point charges, `q_1 = 10 xx 10^(-8) C and q_2 = -2 xx 10^(-8) C`, are separated by a distance of 60 cm in air.
Find at what distance from the 1st charge `q_1`, would the electric potential be zero.

Explanation

Here `q_1 = + 10 xx 10^(-8)C and q_2 = - 2 xx 10^(-8) C` and distance between them r = 60 cm = 0.6m
Do it exactly like Short Answer Question Number 23 given above.
Distance x = 50 cm and 75 cm from `q_1` or 10 cm and 15 cm from `q_2`.