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Six equal point charges Q = 10nC are located at 2,3,4,5,6,7m. Find the potential at origin.

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Six equal point charges Q = 10nC are located at 2,3,4,5,6,7m. Find the potential at origin. (a) 140.35 (b) 141.35 (c) 142.35 (d) 143.35 This question was posed to me in an online interview. Origin of the question is Electric Potential topic in section Electrostatic Fields of Electromagnetic Theory Select the correct answer from above options Electromagnetic Theory questions and answers, Electromagnetic Theory questions pdf, Electromagnetic Theory question bank, Electromagnetic Theory questions and answers pdf, mcq on Electromagnetic Theory pdf,electromagnetic theory book pdf,electromagnetic theory pdf notes,electromagnetic theory lecture notes,electromagnetic theory of light,maxwell electromagnetic theory,electromagnetic theory proposed by,electromagnetic theory engineering physics,electromagnetic theory nptel

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Right choice is (d) 143.35 Best explanation: V = (1/4πεo) ∑Q/r = (10 X 10^-9/4πεo) (0.5 + 0.33 + 0.25 + 0.2 + 0.166 + 0.142) = 143.35 volts.

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