A) \[4.4\times {{10}^{-3}}\,tesla\]
B) \[5.2\times {{10}^{-3}}\,tesla\]
C) \[3.4\times {{10}^{-3}}\,tesla\]
D) \[7.8\times {{10}^{-3}}\,tesla\]
Correct Answer: A
Solution :
[a] Given that : \[{{B}_{1}}=1.2\times {{10}^{-2}}\,T\], orientation of dipole with the field \[{{B}_{1}},{{\theta }_{1}}={{15}^{o}}\] Hence, orientation of dipole with \[{{B}_{2}}\], \[{{\theta }_{2}}={{60}^{o}}-{{15}^{o}}={{45}^{o}}\] (figure) As the dipole is in equilibrium, therefore, the torque on the dipole due to the two fields must be equal and opposite.You need to login to perform this action.
You will be redirected in
3 sec