How do electric charges create magnetic fields?

1 Answer
Aritra G.
Jun 1, 2015

Electric charges in motion create magnetic fields.
When their motion is steady, a steady magnetic field is produced.

But if the current is unsteady, a changing magnetic field is produced, which can then induce an electric field (as per as Faraday's law), which again induces a magnetic field (as fer as Ampere-Maxwell's law) and thus, EM waves are generated.

Related questions
See all questions in Electric Charge
Impact of this question
2807 views around the world
You can reuse this answer
Creative Commons License