Both 5 and 6
Q.5. A wire of length 'l' carries a current bent into various regular polygons shown below. Find magnetic moment in terms of length of the wire.
(a) Equilateral triangle (b) Square (c) Regular hexagon (c) Circular loop

Q.6. A current carrying wire of length 'l' is bent to form a circular coil of one turn. After that it is again bent to form a circular coil of two turns. Find ratio of magnetic moment of coils respectively.