🌐日本語EnglishEspañolItalianoTürkçeالعربيةفارسی中文日本語EntityQ5042828· pop 9· linked from 89 articles電力効率useful power output per electrical power consumedAvailable in 9 languagesEspañol中文ItalianoالعربيةAlbanianCatalanTürkçeفارسیvia Wikidata sitelinks · CC0Connectionsmaximum power transfer theoremEntityelectricityEntityCategoriesElectrical engineeringEnergy economics