Question

如图,当选C点为参考点时,已知Va＝-6V,Vb＝-3V,Vd=-2V,Ve=-4V,求Uab,Ucd各是多少?若选d点

Answer 1

1)

Uab=-6-(-3)=3V

Ucd=0-(-2)=2V

2)若选d点为参考点,则各电位分别是：

Va＝-6-(-2)=-4V,

Vb＝-3-(-2)=-1V,

Vc＝0-(-2)=2V,

Vd＝0V,

Ve＝-4-(-2)＝-2V