Hi, I am taking this course right now, and I had a suggestion for a definition change. In the Simple Theory section of Understanding How Electricity Works, you defined power as follows:
Power: is the amount of work that the electrical flow can do. This is expressed as watts or kilowatts (1,000 watts).
However, this is not entirely true. Power is defined as the rate at which either: energy is consumed or work is performed. So a 100W lightbulb consumes 100 Joules of energy per second (because 1 watt = 1 J/s). Because power is energy/time it makes sense why kilowatt-hours are actually a measurement of energy:
energy/time x time = energy
Simply stating that power is the amount of work that an electrical flow can do is true, but it better describes potential energy. Power is more accurately the amount of work that an electrical flow can do in a given period of time, hence the watt is the joule per second.
Not that it really makes much of a difference for the scope of this course, I just thought I’d point that out in case you agreed and felt like editing a future edition of the course. Regardless, thanks for all of the courses. I’ve been learning a lot so far.