Question 325: Current Electricity

Question

In the circuit, given in the figure currents in
different branches and value of one resistor are
shown. Then potential at point B with respect to
the point A is :
![](https://imagex.cdn.examgoal.net/jgy2xukfl39moz/23eda1a2-9c9c-4968-a881-ba662640bd62/4fd6b730-00be-11eb-8293-3b6cc591631c/file-jgy2xukfl39mp0-396w.png)

Accepted Answer

Let us assume the potential at A = V
A
= 0
Now at junction C, According to KCL
i
1
+ i
3
= i
2
$ \Rightarrow $ 1 A + i
3
= 2 A
$ \Rightarrow $ i
3
= 1 A
Now Analyse potential along ACDB,
V
A
+ 1 + i
3
(2) Ã¢ÂÂ 2 = V
B
$ \Rightarrow $ 0 + 1 + 1(2) Ã¢ÂÂ 2 = V
B
$ \Rightarrow $ V
B
= 3 Ã¢ÂÂ 2 = 1 V
![](https://imagex.cdn.examgoal.net/jgy2xukgyp7fw1/2b85053f-04e9-42ca-b085-0d8e8dbc821c/83a08a10-1c06-11eb-8293-3b6cc591631c/file-jgy2xukgyp7fw2-431w.png)

Answer

+2 V

Answer

-2 V

Answer

+1 V

Answer

-1 V

Current Electricity

In the circuit, given in the figure currents in different branches and value of one resistor are shown. Then potential at point B with respect to the point A is :

Choose the correct answer: