何谓电桥平衡？实验中如何判断电桥平衡？ 什么是平衡电桥？电路分析中如何分析平衡电桥？
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然后将二者并联。然后将R1、R2的中间和R3、R4的中间用用导线连接。称电桥电路。
将整个电路接入电源二端。当连接的导线中无电流通过时。电桥平衡、
判断电桥平衡时。只要将一电流表或电压 表接在中间连接的导线上，若电表无读数。即电桥平衡。
将电桥接入电路后，用检流计接触桥臂。
直到基本不偏移。就平衡了。
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