USAGE
Enter any two values and the computed fields are highlighted in blue. Use the locks to protect fields. Arrow buttons (or keyboard arrows) on resistance jump to next/previous E-series values; hold Shift for fine (E96) steps.
Calculate Ohm’s Law and the Power Law. The former describes the relationship between voltage 
, current 
and resistance 
, the latter describes the relationship between power 
, voltage and current as follows:
Of course using the locking you can produce deadlock situations, but that is your fault then ; )