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