Alfred is a productivity application for Mac that takes spotlight and makes it totally awesome. It is part launcher, part file system search and part command line interface. Making electrical Ohm’s law calculations isn’t difficult but it’s a common task ripe for automation so I made a extension for Alfred to handle these quick calculations.
Use keyword “Ω” (option+Z) in Alfred and specify any two of v=, i= or r= and get all relivent Ohm’s law answers in Growl. Alfred Ω is hosted on github and is compatible with the Extension+Updater extension.