A) 0.2 J
B) 0.4 J
C) 0.05 J
D) 0.1 J
Correct Answer: B
Solution :
Energy stored in an inductor is given by \[E=\frac{1}{2}L{{i}^{2}}\] Given,\[L=50\,mH=50\times {{10}^{-3}}H,\,i=4\,A\] \[\therefore \] \[E=\frac{1}{2}\times 50\times {{10}^{-3}}\times {{(4)}^{2}}\] \[\Rightarrow \] \[E=0.4\,J\]
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