Light bulbs act as resistors and convert electrical energy into electromagnetic energy (light). The intensity of light that a bulb emits is measured in lumens. The incandescent light bulb in emits...

Light bulbs act as resistors and convert electrical energy into electromagnetic energy (light). The intensity of light that a bulb emits is measured in lumens. The incandescent light bulb in emits 1,600 lumens. A compact fluorescent light bulb that draws 0.10 A of current from the same 120 V source emits 800 lumens. Which bulb is more efficient? How is the efficiency of the light bulbs defined for these calculations?