Nice. But that's a BJT in saturation or cutoff. Which is only part of the story. The magic of a BJT is in quiescent region, which is like using a crowbar to lift something really heavy: the lever amplifies your force the same way a little base current amplifies the Emitter/Collector current.
Going further, a mosfet doesn't use current to switch, it uses electric field. I like to say:
The charge that builds up on the gate from the applied voltage causes a depeletion(enhancement) region which is like Moses parting the red sea, so that holes/electrons can move through it.
Going further, a mosfet doesn't use current to switch, it uses electric field. I like to say:
The charge that builds up on the gate from the applied voltage causes a depeletion(enhancement) region which is like Moses parting the red sea, so that holes/electrons can move through it.