The word 'circuit' is not a Biblical word, so you will need to define what you mean by circuit.
a circuit assembly is a gathering of different groups of jehovahs witnesses.
circuit
A completed electrical circuit provides a current path for electron flow. Circuits that are complete (have completed electrical connections) will "power up" and do what they are supposed to do when energized. An on/off switch completes or breaks an electrical circuit allowing it to be energized or de-energized.
Shouldn't it light?
If there is an Assembly Hall of Jehovah's Witnesses (This is different from a Kingdom Hall) in Raleigh NC; -- there would have been a circuit level assembly held there every weekend of the year.
Basically, when you click that switch, it completes a circuit for the electricity to flow. If the circuit is not completed in any part, the circuit will not work at all
Jehovah's Witnesses do not maintain a public list of people who got baptized at a specific assembly.
Neutral wires are actually ground wires. They enable the circuit to be completed.
the switch in a torch allows the circuit in the torch to be completed
When the electrical circuit is completed - usually by closing a switch.
Continuity is checking for a completed circuit including a short circuit. Checking resistance would be checking in ohms resistance of a circuit, motor windings or an open circuit.
There is a 'lookup' facility at one of the official Watchtower sites, (jw . org)