Briefly describe the following terms as used in mains electricity ? 1)circuit breaker? 2)meter?

1) Circuit breaker: A circuit breaker is a device used in electrical systems to protect the circuit from overloads and short circuits. It automatically interrupts the flow of electricity when it detects a fault, preventing damage to the circuit and potential hazards such as fires or electrical shocks. Circuit breakers are designed to be resettable, allowing the circuit to be restored once the fault is resolved.

2) Meter: In the context of mains electricity, a meter refers to an electrical meter or utility meter. It is a device used to measure the amount of electricity consumed by a residential or commercial building. The meter records the energy usage in kilowatt-hours (kWh) and is typically installed by the utility company to accurately bill the customer for their electricity consumption. Meters can be analog or digital, and they provide important data for monitoring energy usage and managing electricity costs.