Science Common Sense

1699 - Why does a changing electric field produce a magnetic field?

Imagine water flowing in a river. When the water flows (or moves), it creates waves on the surface. Now, think of electric charges as water and movement of electric charges as flow of water. A changing electric field is like a disturbance causing these 'water' (electric charges) to move.

This movement creates 'waves' (disturbances) that go through the air around it. We call these waves 'magnetic fields'. So, a changing electric field creates magnetic fields just like how moving water creates waves on a river.

In simple terms: Moving electric charges make magnetic fields.