In doing a load of clothes, a clothes drier uses 16 A of current at 240...
In doing a load of clothes, a clothes drier uses 16 A of current at 240 V for 42 min. A personal computer, in contrast, uses 2.9 A of current at 120 V. With the energy used by the clothes drier, how long (in hours) could you use this computer to "surf" the Internet?
Homework Answers
power used by cloth drier = VI = 16*240 = 3840 W
total energy = 3840*42*60 = 9676800 J
power requirment of computer = 2.9*120 = 348 W
time for which the computer can be run = 9676800 / 348 = 27806.9 s = 7.72 hours
so, the computer can be run for 7.72 hours
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