A short circuit can result in a very high current flowing through the circuit.

Because the track is so short, the train is sent through the circuit twice.

This significantly alters the flow of current through the circuit.

Almost all of the current will flow through the circuit with the very small resistance.

And the electrons finally reach the counter electrode through the circuit.

It will glow when you pass current through the circuit.

These enzymes are like a battery, as they perform work to drive current through the circuit.

This monitors the level of current passing through the circuit at any given time.

Below, the discussion was loud again, too many talking at once for anything coherent to come through the circuit.

When it has passed through the circuit and gotten back to the battery, the whole cycle begins again.