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【单选题】
下列关于磁感应强度的说法正确的是( ) A. B. C. 小磁针N极受磁场力方向就是该处磁感应强度的方向 D. 垂直于磁场放置的通电导线的受力方向就是磁感应强度的方向A.
运动电荷受磁场力大的地方磁感应强度一定大
B.
运动电荷进入磁场中，受力大小和方向处处相同
C.
小磁针N极受磁场力方向就是该处磁感应强度的方向
D.
运动电荷在磁场中某点受到最大作用力的方向就是该处磁感应强度的方向
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