College Physics 10th Edition by Raymond Serway,Chris Vuille

تمرين 59

A lamp ( R = 150 ), an electric heater ( R = 25 ), and a fan ( R =5 50 ) are connected in parallel across a 120-V line. (a) What total current is supplied to the circuit (b) What is the voltage across the fan (c) What is the current in the lamp (d) What power is expended in the heater