An electric motor on an airplane operates on 21.5 volts and draws a current of 11.0 amperes.How much energy (in joules)does the motor use during a 9.0-hour flight?

Question

Quizplus · Accepted Answer

Using the formula, Energy = Power x Time
Power = Voltage x Current
Power = 21.5 V x 11.0 A = 236.5 W
Energy = 236.5 W x 9.0 h x 3600 s/h = 7662600.0 J
Therefore, the energy used by the motor during the 9-hour flight is 7662600.0 J, which is option D.

An Electric Motor on an Airplane Operates on 21