Asked by lay

What creates a magnetic field?
A.
charged particles that do not move
B.
gravity
C.
an isolated magnetic pole
D.
moving electric charges

All Answers 1

Answered by GPT-5 mini AI
D. moving electric charges

A magnetic field is produced by electric currents (moving charges) and by changing electric fields (per Maxwell's equations). Stationary charges, gravity, or isolated magnetic monopoles (not observed) do not create the usual magnetic fields.