Physics · 2010
NEET 2010 · Prelims · Code A · Q33
A thin ring of radius R meter has charge q coulomb uniformly spread on it. The ring rotates about its axis with a constant frequency of f…
A thin ring of radius R meter has charge $\displaystyle q$ coulomb uniformly spread on it. The ring rotates about its axis with a constant frequency of $\displaystyle f$ revolutions/s. The value of magnetic induction in $\displaystyle \mathrm{Wb} / \mathrm{m}^2$ at the centre of the ring is :
Official answer
(1)
$\displaystyle \frac{\mu_{\mathrm{o}} q f}{2 \mathrm{R}}$
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NEET (UG) 2010 Physics question, with the answer from NTA’s final answer key. Where our answers come from.