dustinquiz6004 dustinquiz6004

08-02-2024
Physics

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A coil having N turns is wound tightly in the form of a spiral with inner and outer radii a and b respectively. When a current I passes through the coil, the magnetic field at the centre is
a. μ0NI/b
b. 2μ0NI/a
c. μ0NI/2(b-a)lnb/a
d. μ0iⁿ/2(b-a)lnb/a

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