Force on 2 ParallelCurrent-Carrying Conductors

• Calculate force on length L of wire b due to field of wire a:
  The field at b due to a is given by:
  

• Calculate force on length L of wire a due to field of wire b:

  The field at a due to b is given by:
  

http://wug.physics.uiuc.edu/courses/phys112/fall97/acts/lect14/act14c/sld001.htm

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