Question

in the figure the potential at A is _when the potential at B is zero ?​

Answer 1

Answer:

12 V

Explanation:

Va- Vb= 2+ 5*2

Va-=12

Answer 2

Answer:

12 volt

Explanation:

to solve this question we need to remember two things

1) when we move in the direction of flow of current then resistances provides negative potential.(V =iR)

2)Moving from positive side of battery to negative side it provides negative voltage and Vice versa is also true.

so, using this concept we can write:

====> Va - 2×5 - 2 = Vb

====> Va - 12 = Vb

====> Va = Vb + 12

now, value at point Vb = 0 (Given)====> Va = 12 Volt

Therefore, Potential at A is 12 Volt