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 carrying a current I=8 mA .The radii of inside and outside turns (figure) are equal to a=50 mm and b=100 mm . (a)The magnetic induction at the centre of the spiral is N muT .Then find value of N . (b)The magnetic moment of the spiral with a given current is N mA m^(2) .Then find value of N .

A thin insulated wire forms a plane spiral of N=100 tight turns carrying a current I=8 mA .The radii of inside and outside turns (figure) are equal to a=50 mm and b=100 mm . (a)The magnetic induction at the centre of the spiral is N muT .Then find value of N . (b)The magnetic moment of the spiral with a given current is N mA m^(2) .Then find value of N .

A thin insulated wire forms a plane spiral of N=100 turns carrying a current i=8mA . The inner and outer radii are equal to a=5 cm and b=10 cm . Find the magnetic induction at the centre of the spiral

A thin insulated wire forms a plane spiral of N=100 turns carrying a current i=8mA . The inner and outer radii are equal to a=5 cm and b=10 cm . Find the magnetic induction at the centre of the spiral

A thin insulated wire form a spiral of N=100 turns carrying a current of i=8mA . The inner and outer radii are equal to a=5cm and b=10cm. Find the magnetic field at the centre of the coil.