In the part of a circuit shown in the figure, the potential difference $(V_G -V_H)$ between points $G$ and $H$ will be ............... $V$
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Current through $\mathrm{H}=5-2=3 \mathrm{\,A}$

$\mathrm{V}_{\mathrm{G}}-\mathrm{V}_{\mathrm{H}}=4 \times 2-3+2 \times 2-3 \times 1$

$=8-3+4-3=6 \mathrm{\,V}$

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