Ohms Law Calculator
Ohms Law Calculator
Enter any two known values and press 'Calculate' to solve the remaining values.
For example, for a freshly charged battery at 4.2 volts and an atomiser with a resistance of 1.2 ohms,
enter 4.2 in the
Volts box and 1.2 in the
Ohms box, then press 'Calculate' to find
the Amps and Power. (You should get a result of 3.5
Amps and 14.7
Watts) Remember to press the Reset before each
new calculation.
Voltage (E) = Current (I) * Resistance (R)
Power (watts) = Current Squared (I^2) * Resistance (R)
Power = I*E = E^2 / R