Andrè Marie Ampere    1775 - 1836

ampere experiment

ampere experiment

This experiment shows that the electric currents react between them. Parallel copper wire repel because the electric current has opposite direction.
The two wire have an end immersed in the mercury and the other end hanged (not fixed) to two different metallic anchors.
To understand the direction of the electric current in the two wire please see the figure below and the animation.

 

 

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