Physics · 2024
NEET 2024 · 23 June · Code C1 · Q12
A uniform wire of diameter d carries a current of 100 mA when the mean drift velocity of electrons in the wire is v. For a wire of diameter d/2 of…
A uniform wire of diameter $\displaystyle d$ carries a current of $\displaystyle 100$ mA when the mean drift velocity of electrons in the wire is $\displaystyle v$. For a wire of diameter $\displaystyle \frac{d}{2}$ of the same material to carry a current of $\displaystyle 200$ mA, the mean drift velocity of electrons in the wire is
Official answer
(2)
$\displaystyle 8 v$
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