A) 25 mH
B) \[25\times {{10}^{-3}}mH\]
C) \[50\times {{10}^{-3}}mH\]
D) \[50\times {{10}^{-3}}mH\]
Correct Answer: A
Solution :
Given: \[r=5\times {{10}^{-2}}m,\] \[N=500\] \[\therefore \] Self-inductance \[L=\frac{{{\mu }_{0}}\pi {{N}^{2}}r}{2}\] \[=\frac{4\pi \times {{10}^{-7}}}{2}=\pi {{(500)}^{2}}\times 5\times {{10}^{-2}}\] \[=2.5{{\pi }^{2}}\times {{10}^{-3}}\] \[=25\times {{10}^{-3}}H\] \[=25mH\]You need to login to perform this action.
You will be redirected in
3 sec