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【单选题】
下列关于交流铁心线圈的电流和磁通的波形的说法中错误的是( )。A.
忽略交流铁心线圈的线圈电阻和漏磁通,当外加电压的波形为正弦波时,主磁通的波形一定是正弦波。
B.
忽略磁滞和涡流的影响,当流入线圈的电流的波形为正弦波时,铁心中的主磁通的波形也是正弦波。
C.
引起交流铁心线圈的电流和磁通的波形畸变的原 因是铁心材料的B和H的关系的非线性。
D.
外加电压越高,交流铁心线圈电流的波形畸变的程度越大。
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