The potential energy at x = 8 m is -2000 V and at x = 2 m is +400 V. What is the magnitude and direction of the electric field?
A) 200 V/m directed parallel to the +x-axis
B) 300 V/m directed parallel to the +x-axis
C) 400 V/m directed parallel to the +x-axis
D) 500 V/m directed parallel to the +x-axis
E) 600 V/m directed parallel to the +x-axis
C
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