如图示,理想变压器原副线圈的匝数之比为n1:n2=2:1,L1是100V40W的灯泡,L2和L3均为220V100W灯泡,当L1正常发光时,求变压器的输入功率.L1串联在原线图,L2、L3并联于副线圈。 (传不了图,晕)
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![如图示,理想变压器原副线圈的匝数之比为n1:n2=2:1,L1是100V40W的灯泡,L2和L3均为220V100W灯泡,当L1正常发光时,求变压器的输入功率.L1串联在原线图,L2、L3并联于副线圈。 (传不了图,晕)](/uploads/image/z/8011974-30-4.jpg?t=%E5%A6%82%E5%9B%BE%E7%A4%BA%2C%E7%90%86%E6%83%B3%E5%8F%98%E5%8E%8B%E5%99%A8%E5%8E%9F%E5%89%AF%E7%BA%BF%E5%9C%88%E7%9A%84%E5%8C%9D%E6%95%B0%E4%B9%8B%E6%AF%94%E4%B8%BAn1%3An2%3D2%3A1%2CL1%E6%98%AF100V40W%E7%9A%84%E7%81%AF%E6%B3%A1%2CL2%E5%92%8CL3%E5%9D%87%E4%B8%BA220V100W%E7%81%AF%E6%B3%A1%2C%E5%BD%93L1%E6%AD%A3%E5%B8%B8%E5%8F%91%E5%85%89%E6%97%B6%2C%E6%B1%82%E5%8F%98%E5%8E%8B%E5%99%A8%E7%9A%84%E8%BE%93%E5%85%A5%E5%8A%9F%E7%8E%87.L1%E4%B8%B2%E8%81%94%E5%9C%A8%E5%8E%9F%E7%BA%BF%E5%9B%BE%EF%BC%8CL2%E3%80%81L3%E5%B9%B6%E8%81%94%E4%BA%8E%E5%89%AF%E7%BA%BF%E5%9C%88%E3%80%82+%EF%BC%88%E4%BC%A0%E4%B8%8D%E4%BA%86%E5%9B%BE%EF%BC%8C%E6%99%95%EF%BC%89)
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