You need four basic components to create a simple electrical circuit:

1. Energy Source: This provides the power to drive the circuit. Examples include batteries, power supplies, or generators.

2. Conductor: This allows electricity to flow through the circuit. Typically made of wire, usually copper or aluminum.

3. Load: This is the device that uses the electrical energy. It could be a light bulb, a motor, a speaker, or any other electrical device.

4. Switch: This controls the flow of electricity in the circuit. It can be used to turn the circuit on or off.

Let me know if you want to learn more about specific types of circuits!