Capítulo 24
Potencial elétrico
Energia Potencial Elétrica
When an electric field accelerates a free positive charge q, it is given kinetic energy. The process is analogous to an object accelerated by a ...
Energia Potencial Elétrica em um Campo Elétrico Uniforme
When an electric field accelerates a free positive charge, it acquires kinetic energy. This process is analogous to an object being accelerated by a ...
Energia Potencial Elétrica de duas Cargas Puntiformes
The electric potential energy of a test charge in a uniform eclectic field can be generalized to any electric field produced by static charge ...
Potencial Elétrico e Diferença de Potencial
Suppose a positive test charge moves away from a positive static charge, then the Coulomb force does positive work, and its electric potential energy ...
Encontrando o Potencial Elétrico a partir do Campo Elétrico
For a system of charges, it is easy to calculate the system's potential because potential is a scalar quantity. However, in some instances where ...
Cálculos do Potencial Elétrico I
Consider a ring of radius R with a uniform charge density λ. What will the electric potential be at point M, which is located on the axis of the ring ...
Cálculos do Potencial Elétrico II
An electric dipole is a system of two equal but opposite charges, separated by a fixed distance. This system is used to model many real-world systems, ...
Superfícies Equipotenciais e Linhas de Campo
Electric potential can be pictorially represented as a three-dimensional surface. On such a surface, the electric potential is constant everywhere. The ...
Superfícies Equipotenciais e Condutores
For a conductor in which all charges are at rest, the conductor's surface is equipotential. The electric field is always perpendicular to ...
Determinando o Campo Elétrico a partir do Potencial Elétrico
The electric field and electric potential are related to each other. If the electric field at various points in the region of interest is known, it can be ...
Equações de Poisson e Laplace
The electric potential of the system can be calculated by relating it to the electric charge densities that give rise to the electric potential. The ...
Gerador de Van de Graaff
Van de Graaff generators (or Van de Graaffs) are devices used to demonstrate high voltage due to static electricity that can also be used for research. ...
Energia Associada a uma Distribuição de Cargas
The work done to bring a charge through a distance r is given by the potential difference between the initial and the final position. To assemble a ...
Condições de Contorno Eletrostáticas
Consider an external electric field propagating through a homogeneous medium. When the electric field crosses the surface boundary of the medium, it ...
Segundo Teorema da Unicidade
Consider a region consisting of several individual conductors with a definite charge density in the region between these conductors. The second uniqueness ...
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