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Two cells of emf 10 V and 2 V and internal resistance 10 Ω and 5Ω respectively, are connected in parallel as shown.

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Two cells of emf 10 V and 2 V and internal resistance 10 Ω and 5Ω respectively, are connected in parallel as shown. Find the effective voltage across R.

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The effective voltage across R is given by

\(\Rightarrow \epsilon_{eq}=2\,V\)

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