CBSE 2023 · Region 1 · Set 1 · Q3 · 1 mark
The potential difference across a cell in an open circuit is $\displaystyle 8$ V . It falls to $\displaystyle 4$ V when a current of $\displaystyle 4$ A is drawn from it. The internal resistance of the cell is :
Official answer
From CBSE’s own marking scheme for this paper.
(D)
$\displaystyle 1 \Omega$
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CBSE Class 12 Physics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.