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NEET2023PhysicsElectromagnetic InductionActual

The magnetic energy stored in an inductor of inductance 4   μH carrying a current of 2   A is:

Options

  1. A8   μJ
  2. B4   μJ
  3. C4   mJ
  4. D8   mJ

Correct answer

A. 8   μJ

Step-by-step solution

Magnetic energy stored in an inductor is given by, U = 1 2 L i 2 = 1 2 × 4 × 10 - 6 × 2 2 = 8 × 10 - 6   J = 8   μJ

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