根据电容器电容的定义式,可知( )A.电容器所带电荷量越多,它的

根据电容器电容的定义式,可知(  )

A.电容器所带电荷量越多,它的电容就越大

B.电容器不带电时,其电容为零

C.电容器两极板间电压越高,它的电容就越小

D.电容器电容大小与电容器带电荷量无关

答案

解析:电容反映电容器本身特性,它的大小决定于电容器本身的结构(极板正对面积、极板间距、极板间电介质),而与电容器所带电荷量的多少、极板间电压的大小无关.当电容器带电荷量为零时,其电容仍存在.

答案:D

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