Question

Find the electric field when the magnetic field is given by 2sin t in air. (a) 8π x 10^-7 cos t (b) 4π x 10^-7 sin t (c) -8π x 10^-7 cos t (d) -4π x 10^-7 sin t I had been asked this question in an internship interview. This intriguing question comes from Magnetic Field Intensity topic in chapter Magnetostics 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 choice is (a) 8π x 10^-7 cos t The best I can explain: Given H = 2sin t. We get B = μH = 4π x 10^-7 x 2sin t = 8πx10^-7sin t. To get E, integrate B with respect to time, we get 8πx10^-7cos t.