Physics
Ohm's Law (current)
Current from voltage and resistance.
Formula
Formula
I = VR
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| V | voltage (V) | real number (ℝ) | V | input |
| R | resistance (Ω) | real number (ℝ) | Ω | input |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenvoltage (V) = 12, resistance (Ω) = 4
Result3
Example 2
Givenvoltage (V) = 230, resistance (Ω) = 46
Result5