Question 250: 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 :

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

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: