Uniform Electric Fields: In a region where the electric field is uniform and points in the +x direction, the electric potential is -2000 V at x = 8 m and is +400 V at x = 2 m. What is the magnitude of the electric field?
A. 200 V/m
B. 300 V/m
C. 400 V/m
D. 500 V/m
E. 600 V/m
Answer: C
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