# If changing electric field induces magnetic field, how can steady current (therefore steady electric field) create magnetic field around it?

In the search for understanding electromagnetism on deeper level, one of the earliest observations was that magnetic field is created around a current carrying wire. Then it was noticed that changing magnetic field can cause electric field to rise.

So, from symmetry it was demanded that magnetic field should also get induced due to changing electric field; and it was true.

My question is, then how could steady current through a wire create magnetic field around it as steady current should mean steady electric field near the region of the wire?

• A current is constituted by moving charges, which is a source of magnetic fields. Commented Jul 8, 2022 at 8:44
• @Cross Is it because moving charged particles implies changing electric field near it? If this is the case, in a wire with steady current, E should remain the same. And if the sole reason for induced magnetic field is moving charged particles with the notion of changing E being unnecessary, then why does changing electric field induce magnetic field where there might be no moving charges? Commented Jul 8, 2022 at 8:56
• Commented Jul 8, 2022 at 10:38
• Commented Jul 8, 2022 at 10:41
• It is my private opinion that electrons moving together align their intrinsic magnetic dipoles. Exactly the way this happens in permanent magnets in a static way. Electrons are not only electric charges, they also have magnetic dipoles. Charge separation to generate macroscopic electric fields can be achieved by an electric potential difference. An alignment of the magnetic dipoles can be in self-induction. The movement of the charges is probably part of this, along with the alignment in an external magnetic field. Commented Jul 9, 2022 at 4:08