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Direct linkLara, V. O. M.; Amaral, D. F.; Faria, D.; Vieira, L. P. – Physics Education, 2014
We use a tablet to experimentally determine the dependencies of the magnetic field (B) on the electrical current and the axial distance from a coil (z). Our data shows good precision on the inverse cubic dependence of the magnetic field on the axial distance, B?z[superscript -3]. We obtain the value of air permeability ยต[subscript air] with good…
Descriptors: Measurement Techniques, Magnets, Electronic Equipment, Physics
