Power - Physics 101 / AP Physics 1 Review with Dianna Cowern

I always liked the kWh unit, because I think it aligns really nicely with the integral you're paying for. For me, learning to express it as "For some period p, your energy usage is the integral from t_0 to t_0 + p, of some function f(t) - which measures your instantaneous power expenditure" really helped nail down my conception of the power grid and how it works.  Maybe that's a bit of a backwards conception.