Resistance Calculation (Ohm's Law)
Calculate resistance from voltage and current.
V
A
Result
100 Ω
Resistance: 100 Ω
Result in all units
Step-by-step solution
R = V / I
What Is Resistance (Ohm's Law)?
Resistance is the opposition a conductor offers to the flow of current. According to Ohm's law, it is found by the ratio of voltage to current.
How is it calculated?
How Is Resistance Calculated?
R = V ÷ I
- Enter the voltage (volts) and the current (amperes).
- Divide the voltage by the current.
Unit: ohm (Ω).
Frequently Asked Questions
What does resistance depend on?
It depends on the conductor's material, length, cross-sectional area and temperature.