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