A) \[\frac{mgR}{Bl}\]
B) \[\frac{mgR}{B{{l}^{2}}}\]
C) \[\frac{mgR}{{{B}^{2}}{{l}^{2}}}\]
D) \[\frac{mgR}{{{B}^{2}}l}\]
Correct Answer: C
Solution :
[c] \[BI\ell =mg\] or \[B\frac{Bv\ell }{R}\ell =mg\] or \[v=\frac{mgR}{{{B}^{2}}{{\ell }^{2}}}\]You need to login to perform this action.
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