问题描述:
There are three 470ohm resistors are connected in series with a 48V source.What is the minimum power rating of the resistors?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,
问题解答:
我来补答展开全文阅读