Calculadora de Potencial Elétrico
Calcule o potencial elétrico em um ponto devido a uma carga pontual usando V = k·q/r. Resultado em volts para análise de circuitos.
Electric Potential
89,875.00 V
Electric Potential vs Charge
Formula
Electric Potential
Electric potential (voltage) at a point is the work done per unit charge to bring a positive test charge from infinity to that point.
Formula
V = k * Q / r
Unlike electric field, potential is a scalar quantity. It can be positive or negative depending on the sign of the source charge.
Exemplo Resolvido
Potential 10 cm from a 1 microcoulomb charge.
- 01V = k * Q / r
- 02V = 8.9875e9 * 1e-6 / 0.1
- 03V = 8987.5 / 0.1
- 04V = 89,875 V
Perguntas Frequentes
What is the difference between potential and voltage?
Strictly, potential is defined at a single point, while voltage (potential difference) is the difference in potential between two points.
Why is potential a scalar while field is a vector?
Potential represents energy per charge (a single number), while field represents force per charge (which has direction).
What is an equipotential surface?
A surface where the potential is the same everywhere. No work is done moving a charge along an equipotential surface.
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