PHY2061 R. D. Field Department of Physics chp33_3.doc University of Florida Calculating the Magnetic Field (2) Example (Current Loop):A thin ringof radius Rcarries a currentI. What is the magnetic field at a point Pon the z-axis a distance zfrom the center of the ring? Answer: ()BzkI RzRz( )/=+22223 2πExample (Magnetic Dipole):A thin ringof radius Rcarries a current
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