RC Circuits In the given circuit the switch has remained open for an extended period of time. The switch then closes at
t=0s
. Calculate, (a) the voltage across the capacitor at
t=0s
, (b) the voltage across the capacitor in the limit
tlongrightarrow\infty
, and (c) the time constant
(\tau )
of the circuit. (d) Find an expression for the voltage across the capacitor with respect to time, and graph the voltage vs time.