Question

The line integral of which parameter is zero for static fields?

(a) E

(b) H

(c) D

(d) B

I have been asked this question in an international level competition.

I need to ask this question from Maxwell Law in Time Static Fields topic in chapter Maxwell Equations of Electromagnetic Theory

Answer 1

The correct option is (a) E

To explain: The field is irrotational for static fields. Thus curl of E is zero. From Stokes theorem, the line integral of E is same as the surface integral of the curl of E. Since it is zero, the line integral of E will also be zero.