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, \[F=Bil=B\left( \frac{Bvl}{R} \right)l\] \[\left[ \because \,\,induced\,\,current,\,\,i=\frac{Bvl}{R} \right]\] \[\therefore \] \[P=B\left( \frac{Bvl}{R} \right)lv=\frac{{{B}^{2}}{{v}^{2}}{{l}^{2}}}{R}\] \[=\frac{{{(0.5)}^{2}}\times {{(2)}^{2}}\times {{(1)}^{2}}}{6}=\frac{1}{6}W\]You need to login to perform this action.
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