Question

Two point charges lie on the x axis. A charge of 6.2μC is at the origin, and a charge of -9.5μC is at x=10.0cm. What is the net electric field at (a) x=−4.0cm and at (b) x=+4.0cm?
(a) At x=-4.0cm, the net electric field is -2.2 x 10^6 N/C.

(b) At x=+4.0cm, the net electric field is +2.2 x 10^6 N/C.

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