1. Open wire can be a cause of fire. 2. Circuit breaker is used to control the flow of heat. 3. A short circuit is an unwanted path created when bare wires touch. 4. Electromagnet can be tested through a nail coiled with wire. 5. One of the examples of materials that uses electromagnet is buzzer. 6. Dry cell is the source of electricity from a battery. 7. The thicker the wire the brighter the light that is produced.
