MHT CET · Physics · Magnetic Effects of Current
A \(100 \mathrm{mH}\) coil carries a current of \(1 \mathrm{~A}\). Energy stored in the form of magnetic field is
- A \(0.025 \mathrm{~J}\)
- B \(0.050 \mathrm{~J}\)
- C \(0.075 \mathrm{~J}\)
- D \(0.100 \mathrm{~J}\)
Answer & Solution
Correct Answer
(B) \(0.050 \mathrm{~J}\)
Step-by-step Solution
Detailed explanation
Energy stored in an inductor \(\mathrm{E}=\frac{1}{2} \mathrm{LI}^2\)
\(\begin{aligned}
& =\frac{1}{2} \times\left(100 \times 10^{-3}\right) \times 1 \\
& =0.05 \mathrm{~J}
\end{aligned}\)
\(\begin{aligned}
& =\frac{1}{2} \times\left(100 \times 10^{-3}\right) \times 1 \\
& =0.05 \mathrm{~J}
\end{aligned}\)
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