Therearethree470ohmresistorsareconnectedinserieswitha48Vsource.Whatistheminimumpowerratingoftheresistors?正确答案是0.543W,谁能解释一下为何3个同样的电阻还有最小值可言?如何计算出这个结果的,
问题描述:
Therearethree470ohmresistorsareconnectedinserieswitha48Vsource.Whatistheminimumpowerratingoftheresistors?正确答案是0.543W,谁能解释一下为何3个同样的电阻还有最小值可言?如何计算出这个结果的,