A) \[1.96\,\times {{10}^{-4}}T\]
B) \[1.96\,\times {{10}^{-5}}T\]
C) \[1.96\,\times {{10}^{4}}T\]
D) \[1.96\,\times {{10}^{5}}T\]
Correct Answer: B
Solution :
According to tangent law in magnetism, \[B={{B}_{H}}\tan \theta \] Given, \[{{B}_{H}}=0.34\times {{10}^{-4}}T,\] \[\theta ={{30}^{o}}\] \[\therefore \] \[B=0.34\times {{10}^{-4}}\times \tan {{30}^{o}}\] \[=\frac{0.34\times {{10}^{-4}}}{\sqrt{3}}=1.96\times {{10}^{-5}}T\].You need to login to perform this action.
You will be redirected in
3 sec