Question

The charge density of a electrostatic field is given by

(a) Curl of E

(b) Divergence of E

(c) Curl of D

(d) Divergence of D

I got this question by my college professor while I was bunking the class.

This is a very interesting question from Maxwell Law 3 in section Maxwell Equations of Electromagnetic Theory

Answer 1

Right option is (d) Divergence of D

The explanation is: From the Gauss law for electric field, the volume charge density is the divergence of the electric flux density of the field. Thus Div(D) = ρv.