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Physics III (Charge (Charged objects (Negatively charged (more eletrons…

- - - - Positive net charge inside the surface
    - - Negative net charge inside the surface
    - - No net charge inside the surface
- - - - The potential drops in the direction of the eletric field
      - Do not cross
    - - Units of N / C or V / m
    - - Conductors in equilibrium
        
        E_interior = 0
        
        If it's something different of zero, an internal charge would receive force and would be moving. And that's conflicting in the hypotesis of equilibrium.
        
        All the charges are located in the surface of the conductor.
        
        If it's not, by Gauss's Law, it would exist an E inside of the conductor, which contradicts the hypothesis of E interior = 0
        
        E is perpendicular to the surface
        
        If it's not, it would be a tangencial E component that would move the charges near the surface.
        
        The eletric charges density and, hence, the Eletric Field E is greater where the curvature radius is small
        
        Every single point on the surface has the same eletric potential