PHY2061 R. D. Field Department of Physics chp33_5.doc University of Florida Ampere’s Law Examples Example (Infinite Straight Wire with radius R): An infinitely long straight wire has a circular cross section of radius Rand carries a uniform current density Jalong the wire. The total current carried by the wire is I. What is the magnitude of the magnetic field inside and outside the wire? Answer:BrkIrkrIRoutin()==222. Example (Infinite Solenoid): An infinitely long thin straight wire carrying current Iis tightly wound into helical coil of wire (solenoid) of radius Rand infinite length and with
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Magnetic Field, straight wire, long straight wire, circular cross section, R. D. Field