Magnetic Moment of a Current-Carrying Wire Bent into a CircleWire length = 2 m, current = 3.14 A (≈ π A). Find magnetic moment M.

Step-1: Radius of circle:

2πr = 2 ⇒ r = 1/π m

Step-2: Area:

A = πr² = π × (1/π)² = 1/π m²

Step 3 — Magnetic moment:

M = I × A = π × (1/π) = 1 A·m²

Answer: M = 1 A·m²