The production of an electric current by a changing magnetic field is known as electromagnetic induction. This phenomenon was first discovered by Michael Faraday in the 1830s. Here's how it works:
1. When a magnetic field surrounding a conductor changes, it induces an electric current in the conductor.
2. This process is the fundamental principle behind how electric generators work. For example, in a generator, a coil of wire is rotated within a magnetic field, causing the magnetic field to change and inducing an electric current in the wire.
3. Electromagnetic induction is the basis for many modern technologies, including generators, transformers, and electric motors. It plays a crucial role in generating electricity in power plants and is essential for the functioning of various electrical devices we use in our daily lives.
In conclusion, electromagnetic induction is a significant concept in physics that explains how a changing magnetic field can produce an electric current.
