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12. In the diagram at right, the dashed lines represent equipotential surfaces in an electric field. The angle 0 = 40 and the distance d

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12. In the diagram at right, the dashed lines represent equipotential surfaces in an electric field. The angle 0 = 40 and the distance d = 2.0 cm. What is the magnitude of the electric field? (Ignore the dot in the middle of the diagram) A. 10,000 N/C B. 400 N/C C. 5000 N/C 200 V D. 20,000 N/C A OV E. none of the above -200 V 13. Refer to the electric field in the previous problem, in which 0 = 40 and the distance d -2.0 cm. Suppose you place a charge q on the x axis where the potential V = 0. If you then move the charge a distance of 2.0 cm along the x axis toward the right, what would be the electric potential at its final position? (Assume that the electric field occupies the entire region.) A. 200V B. 400V C. 257V D. 153V Only need help with Question 13, but the diagram is above for you. E. 129V

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