variable current
[/ˈvɛriəbəl ˈkɜrənt/]
nounpl: variable currents
corrente variável
1. An electric current that changes in magnitude and/or direction over time, as opposed to a constant direct current
The alternating current in household electrical systems is a type of variable current that changes direction 60 times per second in North America.
A corrente alternada nos sistemas elétricos residenciais é um tipo de corrente variável que muda de direção 60 vezes por segundo na América do Norte.
2. In electrical engineering, any current whose instantaneous value changes with time according to some function
The variable current generated by the solar panel fluctuates depending on cloud cover and time of day.
A corrente variável gerada pelo painel solar flutua dependendo da cobertura de nuvens e da hora do dia.
This is primarily a technical term used in electrical engineering and physics education. In Brazil, it's commonly taught in technical schools (escolas técnicas) and universities. The distinction between variable current and direct current is fundamental to understanding modern electrical systems, from power distribution to electronics.
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