Question

The correct sequence to find H, when D is given is

(a) D-E-B-H

(b) D-B-E-H

(c) It cannot be computed from the data given

(d) D-H

I got this question in an international level competition.

My question is based upon Maxwell Law 1 in portion Maxwell Equations of Electromagnetic Theory

Answer 1

Correct answer is (a) D-E-B-H

To explain: There is no direct relation between D and H, so the option D-H is not possible. Using the formula D = εE, the parameter E can be computed from D. By Maxwell equation, Curl(E) = -dB/dt, the parameter B can be calculated. Using the formula B = μH, the parameter H can be calculated. Thus the sequence is D-E-B-H.