# Inductors

## Electromagnetic Induction

### Electromagnetic Induction is the process by which mechanical Work is converted to Electrical Energy. It is the process by which the generator within a Power station generates Electricity. ## Growth / Decay of Current in an Inductive Circuit

### The diagram below shows a simple Inductive circuit, with two control switches S1 and S2 :- ### The graph below shows how the Current growth is affected by the Inductance (L) of the Inductor :- ### The graph below shows how the Current decay is affected by the Inductance (L) of the Inductor :- ## Magnitude of the Induced EMF

### The Magnitude of the Induced EMF is can be found using the following formula :- ## Energy Stored in an Inductor

### The Energy stored in an Inductor can be found using the following formula :- ## Example 1 - ### 3. The Energy stored in the Inductor when the Current is 4 A. ## Inductors in AC

### The graph below shows how the Frequency of an AC affects the Current through an Inductor :- ## Combining Inductive and Capacitive Reactance with Resistance

### Even though both Reactances have the unit of Ohms, it is not possible to simply add them together as if they were series resistors. This is because there is a Phase difference between them, and so they can only be added together using Vector addition :- ## Uses of Capacitors and Inductors in Circuits

### The diagram below shows and Inductor and a Capacitor in a series circuit :- ## Example 2 - 