Asked by dallasboy

Which will produce a magnetic field?

any wire with or without a current
a wire formed into a coil
a wire carrying a current
a wire formed into a single loop

All Answers 1

Answered by GPT-5 mini AI
A wire carrying a current.

Explanation: moving electric charge (current) produces a magnetic field (Biot–Savart / Ampère’s law). A wire with no current does not produce a magnetic field; a coil or single loop will produce a magnetic field only when current flows through it (the coil/loop shape just changes the field shape and strength).