A home electrical question...

I can see stray capacitance between hot conductors conducting enough leakage current to make a LED light glow in the dark.

Harvard wrote:
I can see stray capacitance between hot conductors conducting enough leakage current to make a LED light glow in the dark.

That’s possible considering a 3-way circuit has a nice long run of wires parallel to each other in the same Romex jacket, 1 has power and 1 goes to the light.

This guy seems to think so: https://diy.stackexchange.com/questions/57578/is-this-really-inductive-capacitive-coupling-and-is-this-remediation-practical

Quote from Health Canada on the topic of Electric Magnetic Fields (EMFs):

START QUOTE:
EMFs are invisible forces that surround electrical equipment, power cords, and wires that carry electricity, including outdoor power lines.

•Electric Fields: These are formed whenever a wire is plugged into an outlet, even when the appliance is not turned on. The higher the voltage, the stronger the electric field.

•Magnetic Fields: These are formed when electric current is flowing within a device or wire. The greater the current, the stronger the magnetic field.

EMFs can occur separately or together. For example, when you plug the power cord for a lamp into a wall socket, it creates an electric field along the cord. When you turn the lamp on, the flow of current through the cord creates a magnetic field. Meanwhile, the electric field is still present.
END QUOTE:

The physics of Capacitance is related to Electric Fields.
The physics of Inductance is related to Magnetic Fields.

Drawing of wnjjs Stray Capacitance