题干

下列说法正确的是(     )

A:电磁铁磁性强弱只与电流大小有关

B:通电导体在磁场中受力方向只与电流方向有关

C:导体在磁场中做切割磁感线运动时,一定会产生感应电流

D:位于磁场中可自由转动小磁针静止时,N极所指的方向即为该点的磁场方向

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答案(点此获取答案解析)

D

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