Question

Which of the following does not generate a magnetic field?

A. a moving electric charge
B. an electric current in a straight wire
C. an electric current in a wire loop
D. a stationary electric charge

Answer 1

D

Step-by-step explanation:

Stationary electric charges produce electric field, it's expression is given by Coulomb's Law. Moving electric charges produce electric field, it's expression is given by a more complicated form than the Columb's Law. Stationary electric charges DOES NOT produce magnetic field.