Switches 1 and 2 in Figure P7-23 have both been in position A for a long time. Switch 1 is moved to position B at \(t=\) \(\mathrm{O}\) and Switch 2 is moved to position B at \(t=20 \mathrm{~ms}\). Find the voltage across the \(0.22-\mu \mathrm{F}\) capacitor for \(t \geq 0\) and sketch its waveform.

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120 V/ +1 SW#1 ' 1=0 200 SW#2 B91= 0.02 10 0.22 + PC(2)