Well this clarifies how an n-channel mosfet will work



but it doesn't go into detail.

I'm making a (bad) assumption) that an n channel mosfet, will work in a similar fashion to a jfet (which I've used prior...mosfets never)...with jfets, you have to make the gate negative wrt to the source to cut them off....hey ho, I guess that why a jfet is called a jfet & a mosfet is called a mosfet....different devices...no workee the same.