What information do connected/closed switches provide?

Connected or closed switches provide information indicating that the circuit is closed, allowing current to flow through the circuit. When a switch is closed, it completes the electrical pathway, confirming that the circuit is operational and that electrical devices connected to it can function as intended. This vital information is crucial for both troubleshooting and ensuring that electrical systems operate safely and effectively.

The other options pertain to different types of information that cannot be directly inferred just from the status of connected or closed switches. For instance, circuit voltage and circuit load depend on various other factors and measurements that go beyond simply knowing if a switch is open or closed. Data on circuit breaker health typically requires monitoring devices or more complex systems designed to assess the performance and status of circuit breakers, thus not being directly provided by the switch itself.