Thus, {HEAD ~ a voltage VA} , substantially equal to {TAIL ~ 2E}, will be produced between lower end A of lower winding L1 and upper end B of upper winding L2 
Thus , { HEAD ~ a voltage VA } , substantially equal to { TAIL ~ 2E } , will be produced between lower end A of lower winding L1 and upper end B of upper winding L2
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH