题目

(2012广西玉林)如图所示的电路,电源电压为3V且保持不变,滑动变阻器R1标有“1A 10Ω”的字样。当滑动变阻器的滑片P在最右端时闭合开关S,通过灯泡L的电流为0.5A,移动滑动变阻器的滑片P,在电路安全工作的情况下,下列说法正确的是( )A.向左移动滑动变阻器的滑片P时灯泡变亮B.滑片P在最右端时通过干路中的电流是0.9AC.R1消耗的电功率范围是1.5~3WD.电路消耗的总功率范围是2.4~4.5W ---Where ________go this summer? ---I'd like to go ________warm. A. would you like to; some where B. will you like to; anywhere C. would you like to; somewhere D. will you like to; somewhere
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