Consider a closed loop of string, left to move through space without external forces.

They are connected to each other in a closed loop.

An example of this would be holding one's shoulder to create a closed loop which the other arm goes through.

In other words, curl is always present when a field line forms a closed loop.

It had been bent so that the open end was at a right angle to the closed loop.

The second system is a closed loop and we can't touch it.

The second is never to leave on the floor a closed loop of wire or string.

Water is then pumped into the system, which forms a closed loop.

According to this definition, a knot only makes sense in a closed loop.

If the closed loop were long enough it could even be used for power transmission.

Now the one place kids have always looked to as the ultimate refuge - the open road - may start feeling like a closed circuit.

They cut their phone lines and patch in calls on a closed circuit.

Do not forget that whatever voltage source you have is part of the closed circuit.

When the wires touch the metal, a closed circuit is created.

The closed circuit on the delta side provides some benefits.

This one is a closed circuit for just the two of you.

A closed circuit has a complete path for current to flow.

The motor should test as a closed circuit with some resistance.

Nobody yet has burned out one of those things on a closed circuit.

Without a closed circuit at this end, the book had said it was very dangerous to send anything living through the system.