How does electromagnetic induction produce an electric current?

Electromagnetic induction produces an electric current by inducing a voltage in a conductor.

When a conductor is moved through a magnetic field, or when a magnetic field is moved through a conductor, a voltage is induced in the conductor. This is known as electromagnetic induction. The voltage induced is proportional to the rate of change of the magnetic field or the rate of movement of the conductor.

The induced voltage causes an electric current to flow in the conductor, according to Ohm's law. The direction of the current is determined by the direction of the induced voltage and the resistance of the conductor. This is the basic principle behind the operation of generators and transformers.

In generators, a mechanical force is used to rotate a coil of wire through a magnetic field. The changing magnetic field induces a voltage in the coil, which causes an electric current to flow. The current is then used to power electrical devices.

In transformers, two coils of wire are placed close together, but not touching. An alternating current is passed through one coil, which creates a changing magnetic field. This changing magnetic field induces a voltage in the other coil, which causes an electric current to flow. Transformers are used to change the voltage of an alternating current, which is important for the distribution of electrical power.

Overall, electromagnetic induction is a fundamental principle of electricity and is used in a wide range of applications, from power generation to wireless charging.