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RC Voltage Decay
\(V(t) = V_0 e^{-t/(R C)}\)
Instructions:
Select the variable you want to solve for, and fill in the others.
Solve
Symbol
Input Value
Unit
Description
\(t\)
\(s\)
\(R\)
\(\Omega\)
\(C\)
\(F\)
\(V_{t}\)
\(V\)
\(V_{0}\)
\(V\)
Calculate
Clear
References
Wikipedia page on RC time constant explicitly defines the discharging capacitor voltage as V_C(t) = V_0 · e^{-t/τ} where τ = RC, explaining it as the exponentially-decaying voltage curve from an initial voltage V_0 to zero.
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