A) 0.2 T
B) 0.3 T
C) 0.4 T
D) 0.05 T
Correct Answer: D
Solution :
\[NBiA\,\sin \theta =\tau \] N, B, i and i and A are constants \[\therefore \] \[\sin \,\theta \propto 0.3\] \[\cos \theta \propto 0.4\] \[\tan \theta =\frac{3}{4}\] From Eq. (i) \[\sin \theta =\frac{3}{5}\] \[B=\frac{\tau }{NiA\,\sin \theta }\] \[B=\frac{0.3\times 5}{100\times 5\times 2\times {{10}^{-2}}\times 3}T=0.05T\]You need to login to perform this action.
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