在如图所示电路中,电源电压6V恒定,灯Ll和L2的规格分别为“6V1.8W”和“6V1.2W”,滑动变阻器R的规格为“20Ω 1A”,不计温度对灯丝电阻的影响.求:(1)滑动变阻器的滑片放在a端时,闭合开关S1
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![在如图所示电路中,电源电压6V恒定,灯Ll和L2的规格分别为“6V1.8W”和“6V1.2W”,滑动变阻器R的规格为“20Ω 1A”,不计温度对灯丝电阻的影响.求:(1)滑动变阻器的滑片放在a端时,闭合开关S1](/uploads/image/z/6204198-30-8.jpg?t=%E5%9C%A8%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%E7%94%B5%E8%B7%AF%E4%B8%AD%2C%E7%94%B5%E6%BA%90%E7%94%B5%E5%8E%8B6V%E6%81%92%E5%AE%9A%2C%E7%81%AFLl%E5%92%8CL2%E7%9A%84%E8%A7%84%E6%A0%BC%E5%88%86%E5%88%AB%E4%B8%BA%E2%80%9C6V1.8W%E2%80%9D%E5%92%8C%E2%80%9C6V1.2W%E2%80%9D%2C%E6%BB%91%E5%8A%A8%E5%8F%98%E9%98%BB%E5%99%A8R%E7%9A%84%E8%A7%84%E6%A0%BC%E4%B8%BA%E2%80%9C20%CE%A9%E3%80%801A%E2%80%9D%2C%E4%B8%8D%E8%AE%A1%E6%B8%A9%E5%BA%A6%E5%AF%B9%E7%81%AF%E4%B8%9D%E7%94%B5%E9%98%BB%E7%9A%84%E5%BD%B1%E5%93%8D%EF%BC%8E%E6%B1%82%EF%BC%9A%EF%BC%881%EF%BC%89%E6%BB%91%E5%8A%A8%E5%8F%98%E9%98%BB%E5%99%A8%E7%9A%84%E6%BB%91%E7%89%87%E6%94%BE%E5%9C%A8a%E7%AB%AF%E6%97%B6%2C%E9%97%AD%E5%90%88%E5%BC%80%E5%85%B3S1)
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