true or false pa help po thank u :)

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.

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