The potential difference $\left(\mathrm{V}_{\mathrm{A}}-\mathrm{V}_{\mathrm{B}}\right)$ between the points '…

The potential difference $\left(\mathrm{V}_{\mathrm{A}}-\mathrm{V}_{\mathrm{B}}\right)$ between the points ' A ' and ' B ' in the given part of the circuit is

1. -3 V
2. 3 V
3. 6 V
4. 9 V

Solution

Given circuit can also be drawn as,
By Kirchhoff's voltage law, $V_A-(2 \times 2)-(3)-(2 \times 1)-V_B=0$ $\begin{array}{ll}\therefore & \mathrm{V}_{\mathrm{A}}-4-3-2-\mathrm{V}_{\mathrm{B}}=0 \\ \therefore & \mathrm{~V}_{\mathrm{A}}-\mathrm{V}_{\mathrm{B}}=+9 \mathrm{~V}\end{array}$

Asked in: MHT CET 2024 (10 May Shift 2)

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