The circuit was designed to optimize energy efficiency.

He took a circuitous route to avoid traffic.

The circuit breaker tripped and cut off the power supply.

The case was heard in the circuit court.

The circuit rider traveled from town to town, spreading the word of God.

The closed circuit allows electricity to flow continuously.

Be careful not to cause a short circuit when connecting the wires.

Be careful not to short-circuit the wires when connecting them.

The printed circuit board is the main component of electronic devices.

Please make sure to close the circuit before working on the electrical system.