Q. Two point charges +8q and -2q are located at x=0 and x=L respectively. The point on x axis at which net electric field is zero due to these charges is-
(i) 8L
(ii) 4L
(iii) 2 L
(iv) L
Answer: (iii) 2 L
Two point charges +8q and -2q are located at x=0 and x=L respectively. The point on x-axis at which net electric field is zero due to these charges is