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GUJCET · Physics · Electromagnetic Induction
A coil of self inductance 0.5 mH carries a current of 2 A . The energy stored in Joule is _________ .
- A 1.0
- B 0.001
- C 0.5
- D 0.05
Answer & Solution
Correct Answer
(B) 0.001
Step-by-step Solution
Detailed explanation
B
\(\begin{array}{l} U =\frac{1}{2} LI ^2 \\ U =\frac{1}{2} \times 0.5 \times 10^{-3} \times(2)^2 \\ U =10 \times 10^{-4} \\ U =0.001 J\end{array}\)
\(\begin{array}{l} U =\frac{1}{2} LI ^2 \\ U =\frac{1}{2} \times 0.5 \times 10^{-3} \times(2)^2 \\ U =10 \times 10^{-4} \\ U =0.001 J\end{array}\)
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