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介质中的电场和磁场（二）

介质中的电场和磁场（二）. 选择题 : ( 共 12 分 ) 1. ( C) 2. (B) 填空题 : ( 共 12 分 ) 1. ( 本题 3 分 ) 矫顽力大 , 剩磁也大 . 例如永久磁铁 . 2. ( 本题 3 分 ) 磁导率大 , 矫顽力小 , 磁滞损耗低 . 变压器交流电机的铁芯等. 3. ( 本题 3 分 ) 5134 铁磁质 顺磁质 抗磁质 4. ( 本题 3 分 ) 5135 n I n I.

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介质中的电场和磁场（二）

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  1. 介质中的电场和磁场（二） • 选择题 : ( 共 12 分) • 1. ( C) 2. (B) • 填空题 : ( 共 12 分) • 1. (本题 3 分 ) • 矫顽力大,剩磁也大. • 例如永久磁铁. • 2. (本题 3 分) • 磁导率大,矫顽力小,磁滞损耗低. • 变压器交流电机的铁芯等.

  2. 3. ( 本题 3 分) 5134 铁磁质 顺磁质 抗磁质 4. (本题 3 分 ) 5135 n I n I

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