[header] How to make a simple electrical circuit [title] Gather the necessary materials. [step] To build a simple circuit, you will need a power source, two insulated wires, a light bulb, and a light bulb holder. A power source can be any type of battery or battery pack. 
The rest of the materials can be found at your local hardware store. [substeps] When choosing a light bulb, keep in mind the amount of power your battery emits.