Physics · 2019
JEE Main · 9 April 2019, Shift 2 · Q18
A metal wire of resistance 3 Ω is elongated to make a uniform wire of double its previous length. This new wire is now bent and the ends joined to…
A metal wire of resistance $\displaystyle 3 \Omega$ is elongated to make a uniform wire of double its previous length. This new wire is now bent and the ends joined to make a circle. If two points on this circle make an angle $\displaystyle 60$° at the centre, the equivalent resistance between these two points will be :
Official answer
(3)
$\displaystyle \frac{5}{3} \Omega$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.