A) \[125\,\,erg\]
B) \[125\,\,J\]
C) \[250\,\,erg\]
D) \[250\,\,J\]
Correct Answer: D
Solution :
Final current\[=i=\frac{E}{R}\] ... (1) (here:\[E=100\,\,V,\] \[R=10\Omega \]) from eq. (1) \[i=\frac{100}{10}=10\,\,A\] Energy stored in magnetic field is given by\[U=\frac{1}{2}L{{i}^{2}}\] \[(Here:L=5H)\] So, \[U=\frac{1}{2}\times 5\times {{(10)}^{2}}=250\,\,J\]You need to login to perform this action.
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