A) \[2\times {{10}^{-2}}A-m\]
B) \[5\times {{10}^{-2}}A-m\]
C) \[2\,A-m\]
D) \[5\,A-m\]
Correct Answer: A
Solution :
\[\tau =MB\sin \theta \] \[\Rightarrow \]\[\tau =(mL)Bsin\theta \] \[\Rightarrow \]\[25\times {{10}^{-6}}=(m\times 5\times {{10}^{-2}})\times 5\times {{10}^{-2}}\times \sin {{30}^{o}}.\] \[\Rightarrow \]\[m=2\times {{10}^{-2}}\,A-m\]You need to login to perform this action.
You will be redirected in
3 sec