如图所示在o点置一点电荷q以o为圆心作一圆.现将一电荷从a分别移到圆上的bcd三点则 A.移到b的过程电场力做功最�b.移到c的 Template




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tomski如图所示在o点置一点电荷q以o为圆心作一圆.现将一电荷从a分别移到圆上的bcd三点则 a.移到b的过程电场力做功最�b.移到c的 coloring