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Le 13/06/2023 à 21:12, Quarkim a écrit :
> Soit un disque de cuivre de 10 cm de rayon et de 1 cm d'épaisseur.
> 
> Ce métal contient autant d'électrons libres que d'atomes :
> 1e- + Cu+ ➟ Cu
> 
> Question 1 :
> Si on fait tourner le disque, est-ce qu'une tension électrique apparaît
> entre le bord et le centre du fait de la force centrifuge exercée sur les
> électrons libres ?

Et tu vas le placer où et comment, ton voltmètre ?