College Physics 10th Edition by Raymond Serway,Chris Vuille

تمرين 69

A coffee maker is rated at 1 200 W, a toaster at 1 100 W, and a waffle maker at 1 400 W. The three appliances are connected in parallel to a common 120-V household circuit. (a) What is the current in each appliance when operating independently (b) What total current is delivered to the appliances when all are operating simultaneously (c) Is a 15-A circuit breaker sufficient in this situation Explain.