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Resistor Power (Voltage)
\(P = \frac{V^2}{R}\)
Instructions:
Select the variable you want to solve for, and fill in the others.
Solve
Symbol
Input Value
Unit
Description
\(P\)
\(W\)
\(V\)
\(V\)
\(R\)
\(\Omega\)
Calculate
Clear
References
vCalc - Power from Voltage and Resistance: Explains the Ohm's Law formula for electrical power P = V²/R, defining each variable (voltage, resistance, power in watts) and providing context about power measurement units.
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