Is the resistance of the turning shaft equal in both cases where the output induction circuit is closed and broken. Or to put it another way, if the electrons are permitted to flow via induction does it make any difference to the magnetic resistance? I'm hoping and expect the answer is that it doesn't matter i.e. constant magnetic resistance. Though if it is different, how significant is it? I'm getting confused thinking about the energy equation. If current does flow then kinetic energy was transformed into electrical energy. If current doesn't flow then where is the energy that was otherwise induced? Maybe the resistance has to change to account for that? Say if I'm hand cranking the generator then I will work harder to turn it at the same speed and more of my muscular energy will be used = to the induced current when the circuit is closed. Just musing, doubt that is right.