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