Solution) current i = 101 A
Diameter d = 2.20 mm
Radius r = d/2 = 2.20/2 = 1.10 mm =1.10×10^(-3) m
Magnetic dipole moment = i.A = i((pi)(r^2))
Magnetic dipole moment = (101)(pi)(1.10×10^(-3))^2
Magnetic dipole moment , M = 383.93×10^(-6) Am^2
(B) z = 6cm = 6×10^(-2) m=0.06m
Magnetic field strength B = (Uo/4(pi))(2M/z^3)
B = (4(pi))×10^(-7)/(4(pi))((2×383.93×10^(-6))/(0.06)^3)
B = 3.55×10^(-7) T
B =
Review What is the ring's magnetic dipole moment? A 101 A current circulates around a 2.20-mm...
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