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电炉的电阻差不多(电炉的电压可能为220 或 240),电灯的电阻差了一个数量级(电压为110 或 120)。

killer (流血五步伏尸二人)
(#333945@0)
2002-1-14 -04:00
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Back To Topic: 初级问题:加拿大100W灯泡的电阻是多少?1000W电炉丝的电阻是多少?(我用数字万用表测出来的是灯泡11欧,电炉45欧,好象不对!看来我是不会用,谁能指点,谢了)

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