so long as rotor 14 continues to turn current i pri tends to oppose change in flux u03c6 pm according to lenz 39 s law as does i sec when present producing a countervailing flux u03c6 c because of load current limiting change in u03c6 c will always be less than change in u03c6 pm and will never fully cancel change in u03c6 pm higher load resistances produce lower currents v ir and therefore lower induced flux lower resistances produce higher currents which induce greater flux in the limit of a perfect short circuit condition i e zero load resistance change in u03c6 c will cancel change in u03c6 pm the relationship between output voltage v magnetic flux u03c6 pm produced by permanent magnet generator 20 and magnetic flux u03c6 c produced by the currents i pri and i sec is described by when switching contactor s is closed pmg 10 enters a cancellation mode in which it rapidly de energizes closing switching contactor s shorts primary windings 22 a through secondary windings 22 b effectively bypassing output terminal t out because internal resistances in secondary windings 22 b are much lower than the generator load at output terminal t out substantially all of primary current i pri will flow in series from primary windings 22 a to secondary windings 22 b such that i pri i sec because the internal.