PHYS345 Electricity and Electronics

Answer for P2.7

a.  100 A through 0.78 ohm creates 7.8 kW of dissipated power.
Eficiency is 50/(50+7.8) = 87%.

b.  50 A through 0.78 ohm creates 2.0 kW of dissipated power.
Eficiency is 50/(50+2) = 96%.

c.  (500 V, 100 A): $1250; (1000 V, 50 A): $320


"http://www.physics.udel.edu/~watson/phys345/protected/exercises/answers/P2-7.html"
Last updated Sept. 8, 1998.
Copyright George Watson, Univ. of Delaware, 1998.