A) \[\frac{1}{12}W\]
B) \[\frac{1}{6}W\]
C) \[\frac{1}{3}W\]
D) 1W
Correct Answer: B
Solution :
Rate of work \[=\frac{W}{t}=P=Fv;\] also \[F=Bil=B\,\left( \frac{Bvl}{R} \right)\ l\] Þ \[P=\frac{{{B}^{2}}{{v}^{2}}{{l}^{2}}}{R}=\frac{{{(0.5)}^{2}}\times {{(2)}^{2}}\times {{(1)}^{2}}}{6}=\frac{1}{6}W\]You need to login to perform this action.
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