19.20Ω、30Ω、50Ω等三個电阻串聯後, 接於200V之直流電源,則50Ω電阻所消耗之功率為______ W ,

詳解 (共 2 筆)

詳解提供者：combcreepy

EGXzJhL19E682YHZ2NZq7q7Llvuk8mO6uxEdCNyyCnLRGdXTDoIrlnx6449G6kqYVM+wh0OAYeAQ8Ah4BBwCBwRBByxHhEY3SAOAYeAQ8Ah4BBQBP4PuKJteoW0s3MAAAAASUVORK5CYII=

詳解提供者：Ian Chen

Rth=100Ω
I=V/R=2A (串聯電流相等)
P(50Ω)=(I^2)*R=200W