electric potential difference
[ɪˈlɛktrɪk pəˈtɛnʃəl ˈdɪfərəns]
nounpl: electric potential differences
diferença de potencial elétrico
1. The difference in electric potential energy per unit charge between two points in an electric field; the work done per unit charge in moving a test charge from one point to another
The electric potential difference between the two terminals of a battery is measured in volts.
A diferença de potencial elétrico entre os dois terminais de uma bateria é medida em volts.
2. The voltage across a circuit component or between two points in an electrical circuit
We need to calculate the electric potential difference across the resistor to determine the current flow.
Precisamos calcular a diferença de potencial elétrico através do resistor para determinar o fluxo de corrente.
3. The driving force that causes electric charges to move through a conductor
An electric potential difference is necessary to establish an electric current in a wire.
Uma diferença de potencial elétrico é necessária para estabelecer uma corrente elétrica em um fio.
This is a fundamental concept in physics education and electrical engineering, taught in both Brazilian and American high schools and universities. The term is standardized across technical literature in Portuguese and English-speaking countries. In practical applications, 'voltage' is often used as shorthand for 'electric potential difference' in both countries.
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