1. A portable hair dryer, plugged into a 110 V 2. A current of 0.50 A flows through a light bulb outlet, has a current of 10 A flowing through it. connected to a 110 V outlet. How much power is What is the power rating of the hair dryer? by this bulb? (55 W) “lost” (1100 W) 3. A toaster connected to a 110 V power source 4. A light bulb draws 1.25 A of current from a 120 has 6.0 A of current flowing through it. How V gasoline-powered generator. much power is dissipated as heat? (a) How much power does the generator (660 W) produce? (150 W) (b) If the generator runs for 5.0 min, how much energy will the lamp convert into heat and light? (45 kJ)
1. A portable hair dryer, plugged into a 110 V outlet, has a current of 10 A flowing through it. What is the power rating of the hair dryer? (1100 W) 2. A current of 0.50 A flows through a light bulb connected to a 110 V outlet. How much power is “lost” by this bulb? (55 W) 3. A toaster connected to a 110 V power source has 6.0 A of current flowing through it. How much power is dissipated as heat? (660 W) 4. A light bulb draws 1.25 A of current from a 120 V gasoline-powered generator. (a) How much power does the generator produce? (150 W) (b) If the generator runs for 5.0 min, how much energy will the lamp convert into heat and light? (45 kJ)
__01._power_&_energy_problems_ws_1.docx