Three identical cells are connected in parallel across $A B$. Net emf across $A B$ is .......... $V$
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(a)

$E_{\text {net }}=\frac{\frac{10}{3}+\frac{10}{3}+\frac{10}{3}}{\frac{1}{3}+\frac{1}{3}+\frac{1}{3}}=10$ volt

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