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Science · 2025 · 1 mark
CBSE 2025 · Region 4 · Set 1 · Q12
A piece of wire of resistance 'R' is cut lengthwise into three identical parts. These parts are then connected in parallel. If the equivalent…
A piece of wire of resistance 'R' is cut lengthwise into three identical parts. These parts are then connected in parallel. If the equivalent resistance of this combination is $\displaystyle \mathrm{R}^{\prime}$, then the value of $\displaystyle \mathrm{R} / \mathrm{R}^{\prime}$ is :
Official answer
(D)
$\displaystyle 9$
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CBSE Class 10 Science past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.