CBSE 2025 · Region 7 · Set 1 · Q17 · 2 marks
A cell of emf $\displaystyle E$ and internal resistance $\displaystyle r$ is connected across a resistor of variable resistance $\displaystyle R$. Show graphically the variation of(a)the terminal voltage across the cell,(b)the current supplied by the cell, with $\displaystyle R$ as it is increased from $\displaystyle 0$ to the maximum value.
A cell of emf $\displaystyle E$ and internal resistance $\displaystyle r$ is connected across a resistor of variable resistance $\displaystyle R$. Show graphically the variation of
(a)
the terminal voltage across the cell,
(b)
the current supplied by the cell, with $\displaystyle R$ as it is increased from $\displaystyle 0$ to the maximum value.
Marking-scheme solution
Showing variation graphically
(a)
Terminal voltage with resistance R $\displaystyle 1$
(b)
Current supplied by cell with resistance R $\displaystyle 1$
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