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Question: Answered & Verified by Expert
A $100 \mathrm{mH}$ coil carries a current of $1 \mathrm{~A}$. Energy stored in the form of magnetic field is
PhysicsMagnetic Effects of CurrentMHT CETMHT CET 2023 (10 May Shift 2)
Options:
  • A $0.025 \mathrm{~J}$
  • B $0.050 \mathrm{~J}$
  • C $0.075 \mathrm{~J}$
  • D $0.100 \mathrm{~J}$
Solution:
2074 Upvotes Verified Answer
The correct answer is: $0.050 \mathrm{~J}$
Energy stored in an inductor $\mathrm{E}=\frac{1}{2} \mathrm{LI}^2$
$\begin{aligned}
& =\frac{1}{2} \times\left(100 \times 10^{-3}\right) \times 1 \\
& =0.05 \mathrm{~J}
\end{aligned}$

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