A coil consisting of 100 circular loops with radius 0.60 m carries a 5.0A current. (a) Find the magnetic field at a point along the axis of the coil 0.80 m form the center (b) Along the axis, at what distance from the center of the coil is the field magnitude 1/8 as great as it is at the center?

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y

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