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Find the gradient of the function given by, x^2 + y^2 + z^2 at (1,1,1) (a) i + j + k (b) 2i + 2j + 2k (c) 2xi + 2yj + 2zk (d) 4xi + 2yj + 4zk I had been asked this question during an interview. My question comes from Gradient topic in portion 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 answer is (b) 2i + 2j + 2k To explain: Grad(x^2+y^2+z^2) = 2xi + 2yj + 2zk. Put x=1, y=1, z=1, the gradient will be 2i + 2j + 2k.

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