1mA
5kΩ
0.5µF
1V
5kΩ

vc(0-) = 5 V ; ic(0+) = 1 mA
vc(∞) = -1 V ; ic(∞) = 0 mA
τ = 2.5 ms

vc(t) = -1 + 6e-400t [V] ; t ≥ 0
time for vc to reach 0V: 4.479ms

ic(t) = 5 + 1e-400t [V] ; t ≥ 0
time for ic to reach 0A: never, but 12.5ms is close