Physics
Ohm's Law (voltage)
Voltage from current and resistance.
Formula
Formula
V = I · R
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| I | current (A) | real number (ℝ) | A | input |
| R | resistance (Ω) | real number (ℝ) | Ω | input |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givencurrent (A) = 2, resistance (Ω) = 10
Result20
Example 2
Givencurrent (A) = 0.5, resistance (Ω) = 220
Result110