A will be more positive than the voltage at terminal B. Like also, a voltage is induced in the secondary Ls of {HEAD ~ transformer T} such that terminal 22 is now at a positive potential relative to the potential at {TAIL ~ terminal} 20 
A will be more positive than the voltage at terminal B. Like also , a voltage is induced in the secondary Ls of { HEAD ~ transformer T } such that terminal 22 is now at a positive potential relative to the potential at { TAIL ~ terminal } 20
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH