#7. A 60-watt, 110-volt tungsten filament lamp is operated on 120 volts. Which of the following statements regarding the lamp is (are) true? I. It will consume more than 60 watts while operating. II. It will have a lower resistance than at 110 volts. III. It will be brighter than at 110 volts. IV. It will burn out after operating ½ hour or less.