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What is an complete circuit?

Updated: 8/10/2023
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14y ago

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A circuit is complete whenever current can flow from the battery (or what is producing current), through the circuit, and back to the battery. A complete circuit could contain just a battery and one wire. An incomplete circuit could be a battery with a wire attached to just one terminal, because current cannot flow all the way through the circuit in this case (i.e. cannot flow through the battery).

note: not all elements in a circuit may have current flow in a complete circuit. For instance, a light bulb may be shorted but you still have a complete circuit.

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14y ago
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10y ago

The meaning of the term "complete circuit" is a path that is similar to a circle. For example, a very basic complete circuit would be a flashlight. The flashlight bulb is at one end and a battery is connected to the other end of the flashlight. When you turn on the flashlight, the battery drives an electric current to the flashlight bulb, which turns on the bulb. The light will stay on as long as it receives an electric current from the battery. When the flashlight switch is turned off, the complete circuit is broken, and the flashlight bulb goes out (turns off).

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11y ago

A Circuit that has no gaps and isn't missing anything

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