Calculating Current in RC Circuit with Closed Switch

AI Thread Summary
To calculate the current through R2 immediately after the switch is closed in an RC circuit, the voltage across the initially uncharged capacitor is zero. Given the capacitor value of 7.95 x 10^(-6) F, the resistances R1 at 27.5 Ohm and R2 at 10.5 Ohm, the total voltage from the source is 20.0 V. The current can be determined using Ohm's law, considering only R1 since the capacitor acts as a short circuit at that moment. The discussion emphasizes the importance of understanding the initial conditions of the circuit components.
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Homework Statement


What is the current through R2 immediately after the switch S is closed?
C = 7.95x10^(-6) F , R1 = 27.5 Ohm , R2 = 10.5 Ohm , and Vo = 20.0 V


Homework Equations


I don't know what to use?


The Attempt at a Solution


I thought maybe I use two loops, the left and right and then a junction? I don't know if I have to do a matrix or what for this. Maybe I'm missing something simple here?
 

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Please help !
 
Something simple. What's the voltage across the initially uncharged capacitor immediately after the switch is closed?
 
gneill said:
Something simple. What's the voltage across the initially uncharged capacitor immediately after the switch is closed?

Well they say C= 7.95 x 10^(-6) F what is that number for? I don't know.. :(
if it is uncharged is it just zero ?
 
Oh, okay, I got it. It's just zero then. Thanks :D
 

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