Write thae correct word to complete the sentances. Choose your answer in the box.

wire batteries device open switch close

1. Adding more_____ to a simple circuit will make the bulb brighter.
2. Lenghtening the______ in a simple circuit will make the light in a bulb dimmer.
3. When the______ is closed (on), it makes the circuit complete and allows the electric current to flow.
4. There is less resistance when using thicker_______ in a simple cicrcuit.
5. When the device is____ (off), it does not allow electric current to flow.​