下列做法中能改变通电导体在磁场中受力方�的是 A.只将磁场方�变为原来的反方� B.只改变通电导体中的电流大小 C.只改变通电导体两端的电压 Template




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tomski下列做法中能改变通电导体在磁场中受力方�的是 a.只将磁场方�变为原来的反方� b.只改变通电导体中的电流大小 coloring