RC Circuit
A resistor–capacitor circuit (RC circuit) is an electric circuit composed of resistors and capacitors driven by a voltage or current source. The time required for the voltage to fall by a factor of 1/e is called the RC time constant.
The RC time constant equals the product of the electric capacitance and resistance.
Formula
![QuantityVariable["τ", "Time"] == QuantityVariable["C", "ElectricCapacitance"]*QuantityVariable["R", "ElectricResistance"]](https://www.wolframcloud.com/objects/resourcesystem/marketplacestorage/resources/35d/35db71d6-8ec1-4fb3-8858-5c86b4387239/Webpage/FormulaImage.png "Copy to Clipboard")
| symbol | description | physical quantity |
|---|---|---|
| τ | time constant | "Time" |
| C | electric capacitance | "ElectricCapacitance" |
| R | electric resistance | "ElectricResistance" |
Forms
Examples
Get the resource:
| In[1]:= | ![ResourceObject["RC Circuit"]](images/35d/35db71d6-8ec1-4fb3-8858-5c86b4387239-io-1-i.en.gif){kind=small} |
| Out[1]= |  |
Get the formula:
| In[2]:= | ![FormulaData[ResourceObject["RC Circuit"]]](images/35d/35db71d6-8ec1-4fb3-8858-5c86b4387239-io-2-i.en.gif){kind=small} |
| Out[2]= |  |
Use some values:
| In[3]:= | ![FormulaData[
ResourceObject[
"RC Circuit"], {QuantityVariable["R","ElectricResistance"] ->
Quantity[10, "Ohms"],
QuantityVariable["C","ElectricCapacitance"] ->
Quantity[10, "Microfarads"]}]](images/35d/35db71d6-8ec1-4fb3-8858-5c86b4387239-io-3-i.en.gif){kind=small} |
| Out[3]= |  |