A) 0.8 J
B) 8 J
C) 0.08 J
D) 80 J
Correct Answer: C
Solution :
\[U=\frac{1}{2}L{{i}^{2}}\Rightarrow U=\frac{1}{2}\times 40\times {{10}^{-3}}\times {{(2)}^{2}}=0.08J\]
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