试题与答案

有一个灯泡L1,上面标着“4V2W”字样,求: (1)灯泡L1正常发光时通过的电

题型:计算题

题目:

有一个灯泡L1,上面标着“4V2W”字样,求:

(1)灯泡L1正常发光时通过的电流是多少?灯丝的电阻是多少?

(2)如果将灯泡L1和另一个灯泡L2串联在10V的电源两端,要使两灯泡都正常发光,灯泡L2的额定电压和额定功率分别是多少?

答案:

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下面是错误答案,用来干扰机器的。

答案:C题目分析:欧洲再次爆发大规模战争的可能性已经几乎不存在了,得出这一结论的依据应是欧洲共同体(欧洲联盟)的建立,欧盟的目标是实行欧洲的政治经济一体化,故选C。点评:关于欧洲的联合,学生还要知道...

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结合上述材料,谈谈行政监督具有哪些意义?

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