A) \[\pi \times {{10}^{-4}}\,H{{m}^{-1}}\]
B) \[2\pi \times {{10}^{-4}}\,H{{m}^{-1}}\]
C) \[3\pi \times {{10}^{-4}}\,H{{m}^{-1}}\]
D) \[4\pi \times {{10}^{-4}}\,H{{m}^{-1}}\]
Correct Answer: B
Solution :
Absolute permeability of material of rod \[\mu ={{\mu }_{r}}{{\mu }_{0}}\] \[=(1+{{\chi }_{m}}){{\mu }_{0}}\] \[\mu =(1+499)\times 4\pi \times {{10}^{-7}}\] \[=2\pi \times {{10}^{-4}}H{{m}^{-1}}\]You need to login to perform this action.
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