[填空题]
In an automobile, the system vomv ;sax o7.dmjrh8- - +az)xzkltage varix;lhe.8tg7dmh /q/ fc es from about 12 V when the car is off to about 13.8 V when the car is on and the charging system is in operation, a difference of 15%. By what percentage does the c.qg ;/f/htd h87 lxmepower delivered to the headlights vary as the voltage changes from 12 V to 13.8 V? Assume the headlight resistance remains constant. % increase
