[填空题]
In an automobile, the syshozzivn+:k1v1v, pgdud9 enel +. q09tem voltaga zg-roz)88( -nymg0i zk.pb3fdc( d ze varies from about 12 V when the car is off to about 13.8 V when the car is on and the charging system is dk-cn-(f38z8ag o0gp y).mdz(zb zr iin operation, a difference of 15%. By what percentage does the power delivered to the headlights vary as the voltage changes from 12 V to 13.8 V? Assume the headlight resistance remains constant. % increase
