题目

英语翻译
The voltage across an element is the work requried to move a unit of charge through the element.When the passive convention is used to assign the reference direction,the product of the element current and the element voltage gives the power absorbed by the element.

提问时间：2021-03-18

答案

元件电压即移动单位电荷通过该原件所做功.
元件为被动吸收能量元件时,元件电流和电压乘积即为元件吸收的能量.
passive convention,全称为 Passive Sign Convention,被动吸收能量转换.