CBSE 2025 · Region 7 · Set 3 · Q3 · 1 mark
A steady current I is passed through a conductor at room temperature for time t . It is observed that its temperature rises by $\displaystyle 0 \cdot 5^{\circ} \mathrm{C}$. If $\displaystyle 2$ I current is passed through the conductor (at room temperature) for the same duration, the rise in its temperature will be approximately :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle 2 \cdot 0^{\circ} \mathrm{C}$
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