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RC circuit question

  • Thread starter jaejoon89
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  • #1
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Why is time in a series RC circuit linearly dependent on capacitance as charging/discharging time is increased? (same with resistance) I thought RC circuits were exponential.
 
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  • #2
turin
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Please don't think I'm being rude. I'm just picky. I want to be helpful, but I'm getting sleepy, so this will be terse.



Why is time in a series RC circuit linearly dependent on capacitance as charging/discharging time is increased?
I can only assume that you mean "time constant" for the first "time" in this sentence. This is just a consequence of the very simple definition.



I thought RC circuits were exponential.
This doesn't mean anything. Perhaps you mean that the dependence of the value of some electrical property depends exponentially on time?
 
  • #3
Redbelly98
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Or to put it another way:

The voltage and current are exponential functions of time.

The time required for the voltage or current to reach a specific value is proportional to RC. For example, the time in which the capacitor voltage reaches 50% of its final value.
 

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