Physics · 2023
JEE Main · 25 January 2023, Shift 1 · Q11
A uniform metallic wire carries a current 2 A, when 3.4 V battery is connected across it. The mass of uniform metallic wire is 8.92 × 10^-3 kg,…
A uniform metallic wire carries a current $\displaystyle 2$ A , when $\displaystyle 3.4$ V battery is connected across it . The mass of uniform metallic wire is $\displaystyle 8.92 \times 10^{-3} \mathrm{~kg}$, density is $\displaystyle 8.92 \times 10^3 \mathrm{~kg} / \mathrm{m}^3$ and resistivity is $\displaystyle 1.7 \times 10^{-8} \Omega-\mathrm{m}$. The length of wire is :
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle l=10 \mathrm{~m}$
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JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.