1.

DIPOLE1. A uniform copper wite bf length "L" isbent into a circular coil of two turns anda current "i" is passed through it. The coilnow behaves like a magnetic dipole ofmoment1) i L/ 16r2) i L2 / 8π

Answer»

Letn be the number of turns andR be the radius of the coil

ℓ=2πRn

R=ℓ/2πn

M=niA=iℓ^2/4πnHere, n=2;=>M=iℓ^2/8π

Option (2) is correct.



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