A) \[3\times {{10}^{-3}}N-m\]
B) \[1.5\times {{10}^{-3}}N-m\]
C) \[1.5\times {{10}^{-2}}N-m\]
D) \[3\times {{10}^{-2}}N-m\]
Correct Answer: C
Solution :
Given, \[N=2000,A=1.5\times {{10}^{-4}}{{m}^{2}}\] \[i=2.0A,B=5\times {{10}^{-2}}T,\] and \[\theta ={{30}^{o}}\] Torque, \[\tau =NiBA\,\sin \theta \] \[=2000\times 2\times 5\times {{10}^{2}}\times 1.5\times {{10}^{-4}}\times \sin {{30}^{o}}\] \[=2000\times 50\times {{10}^{-6}}\times \frac{1}{2}\] \[=1.5\times {{10}^{-2}}Nm\]You need to login to perform this action.
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