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Ohm's Law — Solve for resistance 
Ohm's Law — Solve for voltage
Ohm's Law
Three-mode solver: enter any two of V, I, R to find the third and the power dissipation. · in General
Three-mode solver: enter any two of V, I, R to find the third and the power dissipation. The tool every other calculation starts from.
How to use
Three modes — solve for Voltage, Current or Resistance.
What it's for
The core V–I–R relationship, with dissipation shown alongside.
You enter
- Any two of Voltage, Current, Resistance.
You get
- The third quantity, plus power dissipation (P).