
1985E2. In the circuit shown above, i1 and i2 are the currents through resistors R1 and R2, respectively. V1,V2, and Vc are the potential differences across resistor R1 resistor R2, and capacitor C , respectively. Initially the capacitor is uncharged.
a. Calculate the current i1 immediately after switch S is closed.
b. On the axes below, sketch the potential difference V2 as a function of time t .

Assume switch S has been closed for a long time.
c. Calculate the current i2.
d. Calculate the charge Q on the capacitor.
e. Calculate the energy U stored in the capacitor.
Now the switch S is opened.
f. On the axes below, sketch the current i2 as a function of time t and clearly indicate initial and final values.
