Question

Find the power, given energy E = 2J and current density J = x^2 varies from x = 0 and x = 1. (a) 1/3 (b) 2/3 (c) 1 (d) 4/3 I have been asked this question in an internship interview. This interesting question is from Stokes Theorem 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

Answer 1

Right option is (b) 2/3 The best I can explain: From Stoke’s theorem, we can calculate P = E X I = ∫ E. J ds = 2∫ x^2 dx as x = 0->1. We get P = 2/3 units.