Four charges, q, ?q, q, and ?q, are located at equally spaced
intervals on the x axis. Their x values are ?3a, ?a, a, and 3a,
respectively. Does there exist a point on the y axis for which the
electric field is zero? If so, find the y value.
Please explain in full detail how the answer is derived. Thank
you!
y
-
-
- a
2a
b
b-
b
b-
Q.3: Zero Field