Do you work on electrical systems? If so do you understand Ohms law, and, more importantly, the implications of Ohms law for a technician? Have you had a weird electrical fault you solved? What was it and how'd you fix it?

I am a professor in the Motive Power department in our local College here in Thunder Bay, Ontario Canada. I teach apprentices at the college in the Truck and Coach and HD programs specializing in Fuel Systems, Emissions, Engines, Vehicle Management, and Electrical systems and electronics. We mainly Cummins and CAT systems at the college, but also have some Detroit, Mack, and Deere.