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I attached a picture of the RC circuit. The question asks to find the current as a function of time for light bulb 3 (R3). I know that I=I_{o}e^{t/RC}where I_{o}is the initial current that runs through R3 but what about the R in the time constant RC? Is this resistance the total resistance of the circuit or is it just the resistance in R3?

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# Homework Help: Calculating the time constant?

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