Forgive me because I don't know the terminology, but I'll try to describe the electric play I've experienced.
Basically, 2 kinds.
1. Someone has the device attached to them and when they touch someone else both people feel slightly painful shocks at the point of contact. The lighter the touch, the stronger the shock. If you just grab them, nothing, though then you are part of the current and if you touch someone else then the shock occurs at that point of contact. You can have a whole train of people. And different places you touch will react differently. For example, if you touch someones head, their hair getting in the way makes contact come and go non stop, so it's really painful. I'll leave it to you to decide if that's good or bad.
2. With the right equipment, you can attach electrodes to someone and they cause the muscles to contract. The equipment can usually be set on steady, or pulsing. This isn't painful like a shock. But it's very interesting. I had a domme once use a toy like that on me. She put it in my ass, and it was just a dildo. Then, when she turned it on, the way my muscles pulsed and contracted, if felt like I was being fucked, even though it wasn't moving.
This is varsity level play. Not for beginners. In some cases, you need to make sure the current doesn't go by the heart. I would, HIGHLY, recommend finding a domme who is experienced in electrical play and going for a tutorial, or even a session to see what it's like on the receiving end