Test Academy | A uniform conducting wire of length 12a and resistance ‘R’ is wound up as a current carrying coil in the shape of, (i) an equilateral triangle of side ‘a’. (ii) a square of side ‘a’. The magnetic dipole moments of the coil in each case respectively are : √3Ia2 and 3Ia2, 3 Ia² and Ia², 3 Ia² and 4 Ia², 4 Ia² and 3 Ia²

Question

A uniform conducting wire of length 12a and resistance ‘R’ is wound up as a current carrying coil in the shape of,

(i) an equilateral triangle of side ‘a’.

(ii) a square of side ‘a’.

The magnetic dipole moments of the coil in each case respectively are :

Options :

√3Ia² and 3Ia²
3 Ia² and Ia²
3 Ia² and 4 Ia²
4 Ia² and 3 Ia²

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