UNIT 5: INDUCTORS AND INDUCTANCE
INTRODUCTION
An inductor is a coil of wire. It stores energy in a magnetic field. Inductors are used in filters, transformers, and power supplies. Inductance is measured in henries (H).
STORY 1: How an Inductor Works
When current flows through a coil, it creates a magnetic field. The magnetic field stores energy. If the current changes, the magnetic field changes. This creates a voltage that opposes the change. This property is called inductance. Inductors re