20:35 ir2 has to go down easily because ir2 charges vc2 and ir2 = c2dvc2/dt and over time dvc2/dt is decreasing so ir2 decreasing also ir2 is decreasing throughout since vc2 is rising throughout with decreasing slope
how can you guarantee that i1-i2 > i2 please reply thanks better maybe since vc2 is rising and its slope is decreasing so ir2 is decreasing same for ir1 since vc1 is rising (in last ques)
