First order RC Circuit Table problem

AI Thread Summary
The discussion revolves around solving a table for a first-order RC circuit, focusing on initial conditions for current and voltage. The user has calculated initial values for current and voltage at two time points, 0- and 0+, but is uncertain about the remaining values. A key point raised is the necessity to clarify which time interval—charging or discharging—is being analyzed for the table completion. Participants suggest that the table may need to be filled out for both intervals and emphasize the importance of comparing the time constant with the switching interval before making assumptions. The conversation highlights the need for careful analysis of circuit behavior during different time intervals.
k31453
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Homework Statement


Hi I got this problem and have to fill out this table.
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4ea18d02-8e1f-4015-9006-64e73a38f53d-original.png


Homework Equations



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


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 don't know rest of them. the last column i know i have to use node analysis for that.
 
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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.
 
I understand but that's what it said... complete table 1.
 
gneill said:
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.

I understand but that's what it said... complete table 1.
 
k31453 said:
I understand but that's what it said... complete table 1.

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.
 
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