Required information A +3.4 x 10 6 C test charge experiences forces from two other nearby charges: a 21-N force due east and an 15-N force due west. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the magnitude of the electric field at the location of the test charge. The magnitude of the electric field at the location of the test charge is x 106 N/C