Two identical coupled coils each have self-inductance L and mutual inductance M=L/2. Each carries current of magnitude I. Which statements are correct?

Select all that apply

• Option A

  Stored energy in the aiding orientation is 3LI²/2.

• Option B

  Stored energy in the opposing orientation is LI²/2.

• Option C

  The ratio of these energies is 3.

• Option D

  Reversing current in only one coil changes the mutual-energy term but not the self-energy terms.