# First order RC Circuit Table problem

1. Apr 30, 2014

### k31453

1. The problem statement, all variables and given/known data
Hi I got this problem and have to fill out this table.

2. Relevant equations

node analysis
time constant = RC
ic(t)= C dVc(t)/dt

3. The attempt at a solution

I got few answers which i worked it out.

i (0-) = 0

Vc(0-) = 1.84

Vr(0-) = i (0-) * 10000

i (0+) = 0

Vc(0+) = 3.16

Vr(0+) = i (0-) * 10000

Am i right so far?
I dont know rest of them. the last column i know i have to use node analysis for that.

2. Apr 30, 2014

### Staff: Mentor

The problem description mentions two separate time intervals, a charging interval and a discharging interval. You haven't stated which interval is in play for the determination of the table values.

3. Apr 30, 2014

### k31453

I understand but thats what it said... complete table 1.

4. Apr 30, 2014

### k31453

I understand but thats what it said... complete table 1.

5. Apr 30, 2014

### Staff: Mentor

Okay, so pick one of the intervals and state which one you've chosen (somehow I suspect that they want you to fill out the table twice, once for each interval...).

Hint: Before you make assumptions about Vc(0-) be sure to compare the time constant of the circuit to the given switching interval.