Posted by Anonymous on .
The resistance of a bagel toaster is 15 Ω. To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster?
P = V^2/R = 120^2/15 = 960 Watts.
Energy = P * t = 960 * 60s = 57,600 Watt-seconds.