complete circuit
Definition
A complete circuit is a pathway that electricity can flow through without interruption. This means that the circuit must be closed, with no breaks in the wire or other components.
The current in a complete circuit is created by the flow of electrons, which are negatively charged particles. The electrons flow from the negative terminal of the battery to the positive terminal, and they do work as they flow through the circuit.
The amount of work that the electrons can do depends on the strength of the current and the resistance of the circuit.
How can the word be used?
The complete-circuit switch is used to turn on and off the circuit.
Different forms of the word
Noun:
Complete circuit: An electrical circuit that is closed, meaning that there is a path for current to flow from the source to the load and back to the source.
Adjective:
Complete-circuit: Of or relating to an electrical circuit that is closed.
Verb:
To complete a circuit: To make an electrical circuit closed, so that current can flow.
Etymology
The etymology of the phrase "complete circuit" comes from the Latin words "completus" and "circuitus". The word "completus" means "completed" or "finished", and the word "circuitus" means "going around" or "encircling".
Question
What is a complete circuit?
AQA Science Exam Question and Answer
Question:
What is a "complete circuit" in the context of electrical circuits, and why is it crucial for the flow of electric current?
Answer:
A "complete circuit" refers to an electrical circuit in which there is an uninterrupted path for electric current to flow from the power source (e.g., battery) through the components (e.g., resistors, bulbs) and back to the power source again. It is crucial for the flow of electric current because without a complete circuit, the flow of electrons is disrupted, and no electrical current can pass through the circuit.
In a complete circuit, the electrons flow from the negative terminal of the power source through the components, where they perform their functions (e.g., light up a bulb or power a device), and then return to the positive terminal of the power source. This continuous flow of electrons completes the circuit and enables the transfer of electrical energy from the power source to the components.
If the circuit is incomplete, such as when there is an open switch or a disconnected wire, the flow of electrons is interrupted, and the circuit is said to be "broken." In this case, no current can flow, and the components will not function.