Two point charges are held at fixed locations. A +2.0 nC charge is at the origin, and a second –1.0 nC charge is at x = +0.30 m. What is the magnitude of the electric field at x = +0.40 m?
A. 1.1￼e2 N/C.
B. 7.9￼e2 N/C.
C. 9.0e2￼ N/C.
D. 1.0￼e3 N/C.
Answer:B
Two point charges are held at fixed locations. A +2.0 nC charge is at the origin, and a second –1.0 nC charge is at x = +0.30 m. What is the magnitude of the electric field at x = +0.40 m?
A. 1.1￼e2 N/C. B. 7.9￼e2 N/C. C. 9.0e2￼ N/C. D. 1.0￼e3 N/C.