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If V = 2x^2y – 5z, find its electric field at point (-4,3,6)

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If V = 2x^2y – 5z, find its electric field at point (-4,3,6) (a) 47.905 (b) 57.905 (c) 67.905 (d) 77.905 The question was posed to me in quiz. This intriguing question comes from Line Integral topic in section Vector Calculus 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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The correct choice is (b) 57.905 To explain I would say: E = -Grad (V) = -4xy i – 2×2 j + 5k At (-4,3,6), E = 48 i – 32 j + 5 k, |E| = √3353 = 57.905 units.

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