交变电流物理题(高二)如图所示,Q是熔断电流为1A的保险丝,R为用电器,理想变压器的原副线圈的匝数比为n1:n2=2:1.原线圈的电压为U=220√2 sin100πt(V).要使保险丝不容断,R的阻值一定A.不能小
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![交变电流物理题(高二)如图所示,Q是熔断电流为1A的保险丝,R为用电器,理想变压器的原副线圈的匝数比为n1:n2=2:1.原线圈的电压为U=220√2 sin100πt(V).要使保险丝不容断,R的阻值一定A.不能小](/uploads/image/z/8621377-25-7.jpg?t=%E4%BA%A4%E5%8F%98%E7%94%B5%E6%B5%81%E7%89%A9%E7%90%86%E9%A2%98%EF%BC%88%E9%AB%98%E4%BA%8C%EF%BC%89%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2CQ%E6%98%AF%E7%86%94%E6%96%AD%E7%94%B5%E6%B5%81%E4%B8%BA1A%E7%9A%84%E4%BF%9D%E9%99%A9%E4%B8%9D%2CR%E4%B8%BA%E7%94%A8%E7%94%B5%E5%99%A8%2C%E7%90%86%E6%83%B3%E5%8F%98%E5%8E%8B%E5%99%A8%E7%9A%84%E5%8E%9F%E5%89%AF%E7%BA%BF%E5%9C%88%E7%9A%84%E5%8C%9D%E6%95%B0%E6%AF%94%E4%B8%BAn1%3An2%3D2%EF%BC%9A1.%E5%8E%9F%E7%BA%BF%E5%9C%88%E7%9A%84%E7%94%B5%E5%8E%8B%E4%B8%BAU%3D220%E2%88%9A2+sin100%CF%80t%EF%BC%88V%29.%E8%A6%81%E4%BD%BF%E4%BF%9D%E9%99%A9%E4%B8%9D%E4%B8%8D%E5%AE%B9%E6%96%AD%2CR%E7%9A%84%E9%98%BB%E5%80%BC%E4%B8%80%E5%AE%9AA.%E4%B8%8D%E8%83%BD%E5%B0%8F)
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