Ohm's Law: Current
I = V / R
Instructions
Enter voltage in volts and resistance in ohms. The calculator returns current in amperes.
Formula
I = V / R
Common Questions
AC circuits?
For AC with reactance, use impedance Z instead of pure resistance R.
I = V / R
Enter voltage in volts and resistance in ohms. The calculator returns current in amperes.
I = V / R
For AC with reactance, use impedance Z instead of pure resistance R.