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Вопрос 245

What is the inductance of three 10-millihenry inductors connected in parallel?

  1. 0.30 henries
  2. 3.3 henries
  3. 3.3 millihenriesПравильный ответ
  4. 30 millihenries

Объяснение

Inductors in parallel combine like resistors in parallel, so three equal 10-millihenry inductors give 10 / 3 = 3.3 millihenries. The units matter: the answer stays in millihenries, so 3.3 henries is off by a factor of a thousand.

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Вопрос 245: What is the inductance of three 10-millihenry inductors… · FCC General Class (Element 3) · Questena