A) \[\frac{2B\omega {{\ell }^{2}}}{2}\]
B) \[\frac{3B\omega {{\ell }^{2}}}{2}\]
C) \[\frac{4B\omega {{\ell }^{2}}}{2}\]
D) \[\frac{5B\omega {{\ell }^{2}}}{2}\]
Correct Answer: D
Solution :
Here, induced e.m.f. \[e=\int\limits_{2\ell }^{3\ell }{(\omega x)Bdx=B\omega \frac{[{{(3\ell )}^{2}}-{{(2\ell )}^{2}}]}{2}}\] \[=\frac{5B{{\ell }^{2}}\omega }{2}\]You need to login to perform this action.
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