circuit is closed and electricity flows (8 letter word)
complete
The word you are looking for is "complete." To arrive at this answer, we need to consider the given information that a circuit is closed and electricity flows.
First, think about the components required for a circuit to function. A circuit needs to be closed or complete, meaning that there is a continuous path for electricity to flow. If there is a break or gap in the circuit, electricity cannot flow.
Now, consider the word "complete." It consists of eight letters and accurately describes a closed circuit where electricity can flow unhindered. Thus, "complete" is the correct answer.