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电容器公式C=Q/U中的Q是指电容器所带的电荷量,由于一般情况下电容器两极板带等量异种电荷,所以,Q应指单个极板所带电量的绝对值.但是,在有些情况下,电容器两极板所带的却不是等量异种电荷,在这种情况下,公式C=Q/U中的Q又如何取值呢?如图1,设平行板电容器A、B两极板的带电量分别为Q_A、Q_B,若不考虑两极板相互间的静电感应,则电荷都将均匀的分布在极板的外表面,且A和B两极板的内外面平均分配带电
Capacitor formula C = Q / U in the Q refers to the amount of charge brought by the capacitor, because in general the capacitor plates with equal amount of heterogeneous charge, so, Q should refer to the absolute amount of charge on a single plate However, In some cases, it is not the same amount of dissimilar charge brought by the two plates of the capacitor. In this case, Q in the formula C = Q / U is how to take value? As shown in Figure 1, Charged plates are Q_A and Q_B, respectively. Without considering the electrostatic induction between the bipolar plates, the charges will be uniformly distributed on the outer surface of the plate, and the inner and outer surfaces of the two plates A and B are equally charged