请根据图示回答相关问题:
Daming peanuts at Christmas.
—Yeah, he has ______ the Qing dynasty.
定值电阻R消耗的电功率P随R两端电压U变化的图象如图所示.请根据图象和已有知识判断:当电阻R两端电压U为3V时,电阻R消耗的电功率P为____ W.