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电工单位E是什么

2025-03-16 13:46:59

推荐回答（1个）

回答1：

电源效率：P总＝IE，P出＝IU，η＝P出/P总｛I:电路总电流(A)，E:电源电动势(V)，U:路端电压(V)，η：电源效率｝
9.电路的串/并联串联电路(P、U与R成正比) 并联电路(P、I与R成反比)

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