" ....on way ..." I suppose it meant to be " ....one way ...".
A thermocouple.
I think what he is trying to say is what I would: move a magnet back-and forth next to a wire, coil of wire actually.
Move a permanent magnet so that the magnetic field at the conductor is changing.
chemical (battery), heat(thermocouple), or magnetic(generator)
I am doing my science homework and i don't know the answer to this question. so please help.
