The purpose of a circuit breaker is to __________.

The purpose of a circuit breaker is to protect the circuit from overloads. Circuit breakers serve as a safety device in electrical systems by preventing excessive currents that could cause overheating, fires, or damage to the electrical components and wiring. When the current exceeds a predetermined level, the circuit breaker interrupts the flow of electricity, effectively 'tripping' the circuit and protecting the entire system.

This protective function is critical because electrical overloads can result in hazardous situations. By stopping the current flow in case of an overload, circuit breakers play a vital role in electrical safety and help maintain the integrity of the electrical system.

Other options, while related to electricity, do not accurately describe the primary function of a circuit breaker. Increasing circuit power or providing additional lighting focuses on enhancing the circuit's capabilities rather than protecting it. Decreasing current draw implies modifying the energy consumption without addressing the safety aspect, which is the main purpose of a circuit breaker.