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Physics · 2013
JEE Main 2013 · 2013-04-07 Offline · Q44
A metallic rod of length 'l' is tied to a string of length 21 and made to rotate with angular speed ω on a horizontal table with one end of the…
A metallic rod of length 'l' is tied to a string of length $\displaystyle 21$ and made to rotate with angular speed $\displaystyle \omega$ on a horizontal table with one end of the string fixed. If there is a vertical magnetic field 'B' in the region, the e.m.f. induced across the ends of the rod is :
Official answer
(1)
$\displaystyle \frac{5 \mathrm{~B} \omega \mathrm{l}^2}{2}$
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JEE Main 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.