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Figure: http://s24.postimg.org/6jwbbnzlh/image.png The potential difference between A and B will be what? Ans. 12 V

Figure: http://s24.postimg.org/6jwbbnzlh/image.png

The potential difference between A and B will be what?

Ans. 12 V

Grade:Upto college level

1 Answers

Revant Buch
19 Points
7 years ago
let potential at middle junction be x. since the current coming out of two arms from point b is 3 A and 4A , by kirchoff`s 1st law, the current flowing between x and B is 7A. now moving from A to x: Va-5*2+10=x, and then from x to B: x-7*1-5=Vb. solving these two equations we get Va - Vb= 12 V

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