What is electromagnetic induction and how is it used in technology?

What is electromagnetic induction and how is it used in technology?

Electromagnetic induction is the process of generating electric current from a changing magnetic field. It's used in transformers, generators, and inductors.

Can you explain how a transformer works using electromagnetic induction?

Sure! A transformer works by using two coils of wire, called the primary and secondary coils. When an alternating current flows through the primary coil, it creates a changing magnetic field that induces a voltage in the secondary coil.

What are some real-world applications of electromagnetic induction?

Real-world applications include electric generators, induction cooktops, and wireless charging systems. They all rely on the principles of electromagnetic induction.

Are there any limitations or challenges with using electromagnetic induction?

Yes, some challenges include energy loss due to heat and the need for precise alignment in some applications. Additionally, efficiency can vary based on the materials used.