如图所示,电路中有一个“2.5V 0.5A”的小灯泡和一个“10欧 1A”的滑动变阻器,电源电压为3V,求: (1)当小灯泡正常工作时,滑动变阻器接入电路中的阻值为多少(2)当滑动变阻器的滑片移动
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![如图所示,电路中有一个“2.5V 0.5A”的小灯泡和一个“10欧 1A”的滑动变阻器,电源电压为3V,求: (1)当小灯泡正常工作时,滑动变阻器接入电路中的阻值为多少(2)当滑动变阻器的滑片移动](/uploads/image/z/4608235-19-5.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E7%94%B5%E8%B7%AF%E4%B8%AD%E6%9C%89%E4%B8%80%E4%B8%AA%E2%80%9C2.5V+0.5A%E2%80%9D%E7%9A%84%E5%B0%8F%E7%81%AF%E6%B3%A1%E5%92%8C%E4%B8%80%E4%B8%AA%E2%80%9C10%E6%AC%A7+1A%E2%80%9D%E7%9A%84%E6%BB%91%E5%8A%A8%E5%8F%98%E9%98%BB%E5%99%A8%2C%E7%94%B5%E6%BA%90%E7%94%B5%E5%8E%8B%E4%B8%BA3V%2C%E6%B1%82%EF%BC%9A++%EF%BC%881%EF%BC%89%E5%BD%93%E5%B0%8F%E7%81%AF%E6%B3%A1%E6%AD%A3%E5%B8%B8%E5%B7%A5%E4%BD%9C%E6%97%B6%2C%E6%BB%91%E5%8A%A8%E5%8F%98%E9%98%BB%E5%99%A8%E6%8E%A5%E5%85%A5%E7%94%B5%E8%B7%AF%E4%B8%AD%E7%9A%84%E9%98%BB%E5%80%BC%E4%B8%BA%E5%A4%9A%E5%B0%91%EF%BC%882%EF%BC%89%E5%BD%93%E6%BB%91%E5%8A%A8%E5%8F%98%E9%98%BB%E5%99%A8%E7%9A%84%E6%BB%91%E7%89%87%E7%A7%BB%E5%8A%A8)
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