CBSE 2025 · Region 6 · Set 2 · Q17 · 2 marks
A cell of emf $\displaystyle E$ and internal resistance $\displaystyle r$ is connected to an external variable resistance $\displaystyle R$. Plot a graph showing the variation of terminal voltage V of the cell as a function of current I, supplied by the cell. Explain how the emf of the cell and its internal resistance can be found from it.
Marking-scheme solution
Graph showing the variation of terminal voltage V of the cell as a function of current I.
Current ElectricityCells, emf, Internal ResistanceApplyvery_short_answermedium
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