9-36. Two negative charges have locations as shown in the Figure. Charge
q1 is -3.6X10-8 C; charge q2
is -5.2X10-8 C. What is the electric field (magnitude
and direction) at (a) point A? (b) point B?
The direction of the field E1 due to q1
at the point A is:
(A)
(B)
(C)