Quote:
The voltage on the wire is still AC, and it will still generate a faint electric field, even if no current flows.


Interesting... So, I could hold this probe up to an empty household socket and it would detect that it is live, right?

I know that this is an AC probe, but can an open DC circuit also be checked this way? Seems like DC characteristics tend to be more "common sense" than AC, so maybe my layman's thinking is correct for DC.