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Illustration Repulsive Lorentz force - two conductors with current flowing in opposite directions

Repulsive Lorentz force - two conductors with current flowing in opposite directions
Repulsive Lorentz force - two conductors with current flowing in opposite directions
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Two conducting wires in which the electron currents \( \class{blue}{\boldsymbol{I}_1} \) and \( \class{blue}{\boldsymbol{I}_2} \) flow in opposite directions. Both currents generate a magnetic field in the whole surrounding space.

  • The first wire generates a magnetic field \( \class{violet}{\boldsymbol{B}_1} \) at the location of the second wire and - according to the Right-hand rule - \( \class{violet}{\boldsymbol{B}_1} \) points out of the screen. The second conductor experiences a Lorentz force \( \class{green}{\boldsymbol{F}_2} \) to the right - away from the first wire.
  • The second wire generates with its opposite current a magnetic field \( \class{violet}{\boldsymbol{B}_2} \) at the position of the first wire and - according to the Right-hand rule - \( \class{violet}{\boldsymbol{B}_2} \) also points out of the screen. The first wire experiences a Lorentz force \( \class{green}{\boldsymbol{F}_1} \) to the left - away from the second wire.

The two wires repel each other!