College Physics ›› 2019, Vol. 38 ›› Issue (6): 16-.doi: 10.16854 /j.cnki.1000-0712.180517

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The force of the charged thin ring and the conductor sphere obtained by using the potential energy method

LIAO Qi-li,DENG Ya,YU Yan,XIE Guo-ya,ZHANG Zhu-feng   

  1. College of Mobile Telecommunications,Chongqing University of Posts and Telecom,Chongqing 401520,China
  • Received:2018-09-19 Revised:2018-12-24 Online:2019-06-20 Published:2019-07-02

Abstract: By using the mirror image method in electromagnetism and the Mathematica software,we calculate

the electric potential outside space of the a conductor ball on the axis of the charged thin ring. The electric potential

distribution of the conductor ball outside space is drawn. Then,electric field force can be obtained by using the relationship

between electric potential energy and electric field force,and the force of electric field with distance

change is drawn.

Key words: electric potential, conductor ball, uniform charged thin ring, Mathematica