The energy stored in the capacitor in the circuit is zero at

The energy stored in the capacitor in the circuit is zero at the instant the switch is closed. The ideal operational amplifier reaches saturation in 18 ms . (Figure 1)

Part A

What is the numerical value of R in kilo-ohms, if C = 460 nF ?

Solution

time constant (tau) = RC

R = tau / C

= 18m /460n

= 39.13Kohms