Question

The potential difference (V_A - V_B) between the points A and B in the given figure is______.

Options

• 6 V

• -3 V

• 9 V

• 3 V

Answer 1

The potential difference (V_A - V_B) between the points A and B in the given figure is 9 V.

Explanation:

Given circuit can also be drawn as,

By Kirchhoff's voltage law,

V_A - (2 × 2) - (3) - (2 × 1) - V_B = 0

\[\therefore\] V_A - 4 - 3 - 2 - V_B = 0

\[\therefore\] V_A - V_B = +9V