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)