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Physics · 2026 · 1 mark
CBSE 2026 · Region 1 · Set 2 · Q3
A copper wire is stretched to increase its length by 1%. Then the change in its resistance is close to
A copper wire is stretched to increase its length by $\displaystyle 1$%. Then the change in its resistance is close to
Official answer
(D)
$\displaystyle 2$%
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