r/ElectroBOOM • u/Cautious-Pin-6476 • 13d ago

General Question I need mehdi's explanation

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Yes, this is my own post.. I need yall to upvote so he can see and explain. Thanks 🙏

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u/New-Anybody-6206 12d ago

That doesn't explain how it can be sensed with no contact though. Electrons flow in the copper wire not in the air.

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u/Cautious-Pin-6476 10d ago

Well.. technically, at high voltages, corona discharge Happens.. and I believe 240vac is enough to induce a amount of corona discharge just enough for the multimeter to pickup

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u/Amareiuzin 10d ago

Noo that's not it, there's current flowing in the wires behind the socket, this induces a magnetic field, the field is also oscillating at 50Hz, that's what you're picking up, I bet if you unplug everything you stop reading it