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chp33_3 - PHY2061 R D Field Calculating the Magnetic...

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PHY2061 R. D. Field Department of Physics chp33_3.doc University of Florida Calculating the Magnetic Field (2) Example ( Current Loop ): A thin ring of radius R carries a current I . What is the magnetic field at a point P on the z-axis a distance z from the center of the ring? Answer: ( ) B z kI R z R z ( ) / = + 2 2 2 2 3 2 π Example ( Magnetic Dipole ): A thin ring of radius R carries a current
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