(08静电场)3 电荷(原卷)
【两固定一自由或三自由】1、如图所示,两个固定的带正电的点电荷q1、q2,电荷量之比为1∶4,相距为d,引入第三个点电荷q3,要使q3能处于平衡状态,对q3的位置、电性和电荷量的要求,以下叙述正确的是A.q3在q1和q2连线之间距离q1为处,且为负电荷,对电荷量无要求B.q3在q1和q2连线之间距离q1为处,且为正电荷,对电荷量无要求C.q3在q1和q2连线之间距离q1为处,对电性和电荷量均无要求D.q3在q1和q2连线的延长线上,位于q1左侧处,对电性和电荷量均无要求2、如图所示,三个点电荷q1、q2、q3固定在同一直线上,q2与q3间距离为q1与q2间距离的2倍,每个电荷所受静电力的合力均...
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