Year 6 worked hard to investigate how the thickness of wires affected the brightness of bulbs within an electrical circuit.

Using three different thicknesses of wire, we found how bright the bulbs were by counting how many layers of tracing paper it took until the bulb's light was blocked entirely. 

We now know that...

The thicker the wire, the less resistance, which means the brighter the bulb will shine!

The thinner the wire, the more resistance, which means the bulb will be dimmer!

Also...

The longer the wire, the more resistance, which means the bulb will be dimmer!

The shorter the wire, the less resistance, which means the brighter the bulb will shine!