Timeline for Work done pumping water with a 6 foot static head

Mar 3, 2017 at 17:50 comment Measured resistance is about 1 Mega-Ohm. The operating restive load is 40 ohm. $12.4\div 0.31$
Mar 3, 2017 at 6:52 comment It is an interesting project. Yes, the resistance is the resistance of windings. The current might not be 0.31AMP, which is the max value. You can measure the actual current then get the actual watts $W_a=V \times I$. This should be much lower than 3.84W. The heat is $W_h=\frac{V^2}{R}$. So I guess $0.47+W_h=W_a$. Of course this misses frictional loss. With today's technology, the frictional loss is low.