# Circuits Problem

1. Apr 10, 2009

### confuse

2. Apr 10, 2009

### rl.bhat

Find io from the graph. Find the time constant RC = io/e where e = 2.71828.
From RC you can find R.

3. Apr 10, 2009

### Thaakisfox

We know from the theory that the current vs time function is:

$$I(t)=I_0e^{\frac{t}{RC}}$$

Now you can see that when the current is the e-th part of I_0 i.e. I=I_0/e then the time is $$t=RC$$

Now try to calculate R.