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Прочитайте текст и определите какой из заголовков соответствует тексту Current is a flow of electric...: ответ на тест 606825 - Английский язык

Прочитайте текст и определите, какой из заголовков соответствует тексту
Current is a flow of electricity through a circuit. Let us consider two main types of current: direct and alternating. A direct current (d.c.) flows through a conducting circuit in one direction only. It flows provided a direct voltage source is applied to the circuit.
An alternating current (a.c.) is a current that changes its direction of flow through a circuit. It flows provided an alternating voltage source is applied to the circuit. Alternating current flows in cycles. The number of cycles per second is called the frequency of the current. In a 60-cycle alternating current circuit the current flows in one direction 60 times and in the other direction 60 times per second.
Варианты ответов
  • An Alternating Current
  • Types of Current
  • The Circuit
  • A Direct Current
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Вопрос задал(а): Анонимный пользователь, 12 Ноябрь 2020 в 20:12
На вопрос ответил(а): Анастасия Степанова, 12 Ноябрь 2020 в 20:12

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