- #1
05holtel
- 52
- 0
Homework Statement
How do you express the current in a discharging capacitor.
I know that I = dQ/dt,
Qd = Q0e^(-t/RC)
I = d/dt (Q0e^(-t/RC))
= (Q/RC)e^(-t/RC)
I am confused because taking the derivative of Q0e^(-t/RC)) I think should be
(-Q/RC)e^(-t/RC) because the derivative of (-t/RC) is (-1/RC)
Which solution is correct
Thanks in advance