A thin insulated wire forms a plane spiral of N = 100 tight turns carrying a current I = 8 m A ( milli ampere). The radii of inside and outside turns are equal to a = 50 mm and b = 100 mm, respectively. The magnetic induction at the center of the spiral is

A thin insulated wire forms a plane spiral of N = 100 tight turns carr

1.	A thin insulated wire forms a plane spiral of N = 100 tight turns carrying a current I = 8 m A ( milli ampere). The radii of inside and outside turns are equal to a = 50 mm and b = 100 mm, respectively. The magnetic induction at the center of the spiral is
Answer» 5 `MU` T 7 `mu` T 8 `mu` T 10 `mu` T

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A thin insulated wire forms a plane spiral of N = 100 tight turns carrying a current I = 8 m A ( milli ampere). The radii of inside and outside turns are equal to a = 50 mm and b = 100 mm, respectively. The magnetic induction at the center of the spiral is

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