capacitive and or inductive coupling; which one is this

[Genekuli]

If there are 2 split rings; one smaller within the other as pictured and the outer one is driven by the output of the secondary of the Tesla coil, then is it through inductive coupling or capacity coupling (or both? to what degree) that a current will exist in the smaller split ring that is not in conductive contact with the Tesla coil nor the other driven split ring? which type of induction is it that energizes the smaller inner split ring (tank circuit).

 

[steve66]

With inductive coupling, a current flowing counter-clockwise or clockwise in the outer ring would induce a current in the inner ring that flows either into the page or out of the page. Remember the left hand or right hand rule depending on if you were taught electron flow or conventional current flow. But there is no "circuit" into or out of the page, and nowhere for the current to go, so I think that is ruled out.

Capacitive coupling depends on voltage or charge accumulation, and not current flow. And it's not clear how the telsa coil is connected to "drive" a circulating current through the slip rings. So its also hard to say for sure there is any capacitive coupling.