The switch in the circuit shown has been closed for a long time and is opened at Find a)

Chapter 7, Problem 7.3

(choose chapter or problem)

The switch in the circuit shown has been closed for a long time and is opened at Find a) the initial value of , b) the time constant for , c) the numerical expression for after the switch has been opened, d) the initial energy stored in the capacitor, and e) the length of time required to dissipate 75% of the initially stored energy. Answer: (a) 200 V; (b) 20 ms; (c) (d) 8 mJ; (e) 13.86 ms. 200e-50t V, t 0;