一理想變壓器，原線圈及副線圈的匝數各為N1及N2。設N1>N2，則下列敘述何者為正確?(A)此變壓器對直流電或交流電均可適用(B)副線圈輸出的功率比原線圈輸入的功率高(C)副線圈輸出的交流頻率比原線圈輸入的頻率低(D)若原線圈輸入的交流電流為I，則副線圈輸出的電流為N2/N1(E)若原線圈輸入的交流電壓為ε則副線圈輸出的電壓為N2ε/N1[85日大]
[詳解]
範例:理想變壓器原理[85日大]
Posted in 歷屆物理考題.
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– 2010 年 05 月 14 日
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