挑战习题
1/5单选题
难度:

1.如图所示为保温电饭锅的电路示意图,R1和R2为两发热体电阻丝,S为温控开关,A、B两点接在稳压电源上,R1:R2=10:1,加热状态时电路的功率为1100W,则下列说法正确的是(  )
A S断开时,两发热体R1、R2均发热是加热状态
B 加热状态时10分钟消耗1.1×104J电能
C 保温状态时R2的功率为110W
D 保温状态时电路的总功率为100W
提示1:
IOagueaNrlA9PGltZyB3aWR0aD0xMyBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8wMC9BQi9yQkFDRkZNTWI3dmlMM2ZOQUFBQlYxakxlU3MxODcucG5nIj4s5Y+v55+l77yM5Zyo55S15rqQ55qE55S15Y6L5LiN5Y+Y5pe277yM55S16Lev5Lit55S16Zi76LaK5bCP77yM55S15Yqf546H6LaK5aSn77yM5Y2z5Li65Yqg54Ot54q25oCB77yM5Y+N5LmL5Li65L+d5rip54q25oCB77yM
提示2:
IOagueaNrlI9PGltZyB3aWR0aD0yOSBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8wMC9BQi9yQkFDRkZNTWI3dnpzT3ExQUFBQlpHc2NvY0kwMjIucG5nIj7msYLlh7rnlLXpmLtSPHN1Yj4yPC9zdWI+55qE6Zi75YC877yM6L+b5LiA5q2l5rGC5Ye655S16Zi7UjxzdWI+MTwvc3ViPueahOmYu+WAvO+8m+efpemBk+WKoOeDreaXtumXtO+8jOagueaNrlc9UHTmsYLlh7rmtojogJfnmoTnlLXog73vvJs=
正确答案:RA==
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