When an electric current flows through a wire, it behaves like a magnet.

Here's why:

• Electromagnetism: Moving electric charges (electric current) produce a magnetic field. This is a fundamental principle of electromagnetism.
• Magnetic Field: The magnetic field forms a circular pattern around the wire. The strength of the magnetic field is proportional to the current flowing through the wire.
• Applications: This principle is used in various applications, such as electromagnets, electric motors, and transformers.

For more information, you can refer to these resources:

1. Hyperphysics: Magnetic Field of a Wire
2. All About Circuits: Magnetic Fields and Electromagnetism