两个完全相同的电容器 C 1 和 C 2 ,串联后与电源连接.现将一各向同性均匀电介质板插入 C 1 中,如图所示,则
A.
电容器组总电容减小.
B.
C 1 上的电荷大于 C 2 上的电荷.
C.
C 1 上的电压高于 C 2 上的电压 .
D.
电容器组贮存的总能量增大.
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