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这个电路图中三个电压表分别测量谁的电压？

2025-03-17 05:41:06

推荐回答（1个）

回答1：

这个题条件给得不太明确。三个电压表的内阻如果不可忽略，这种情形比较复杂，你只能得出结论：
V1+V3是R1电压的读数；V2+V3是R2电压的读数。
如果V3的内阻足够大，V1和V2表的读数接近它们自己内阻对电源的分压；
V3的读数（内阻足够大）是V1、V2和R1、R2对电源分压的差值。

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