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  4. Find out the potential difference (in volt) between points A and B, as shown in the figure

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Q. Find out the potential difference (in volt) between points $A$ and $B$, as shown in the figurePhysics Question Image

Current Electricity

Solution:

$E_{e q}=\frac{\frac{E_{1}}{r_{1}}+\frac{E_{2}}{r_{2}}}{\frac{1}{r_{1}}+\frac{1}{r_{2}}}$
$\Rightarrow E_{\text {eq }}=\frac{\frac{5}{3}+\frac{2}{3}}{\frac{1}{3}+\frac{1}{3}}=3.5\, V$