A wire of fixed total length carries current I and is successively shaped into regular polygons with increasing number of sides. Which statements are correct?

Select all that apply

• Option A

  The enclosed area approaches that of a circle with the same perimeter.

• Option B

  The magnetic moment approaches the circular-loop value.

• Option C

  The centre magnetic field approaches the circular-loop value.

• Option D

  The enclosed area approaches zero as n→∞.