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What magnitude of electric current can store 2.5 J of energy in a 3 H...

Physics
JAMB 2025

What magnitude of electric current can store 2.5 J of energy in a 3 H induction coil?

  • A. 1.29 A
  • B. 2.48 A
  • C. 5.00 A
  • D. 3.66 A
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Correct Answer: Option A
Explanation

Answer: A

Energy in an inductor: E = \(\frac{1}{2}\)LI\(^2\) ⇒ I ≈ 1.29 A.

There is an explanation video available below.

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Explanation Video

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