Write SI unit and dimension of magnetic moment.

The SI unit of magnetic moment is A·m² (ampere meter square) and its dimension is [I L²].

The magnetic moment measures the strength and direction of a magnet or current-carrying loop. It is calculated as the product of current and the area of the loop (M = I × A). The unit ampere (A) represents electric current, and meter square (m²) represents area. The dimensional formula is derived from current (I) and length squared (L²), giving [I L²]. Magnetic moment helps in determining how strongly a material or loop reacts to a magnetic field.