Contact us
Choose a category below so we can get back to you as quickly as possible.
t=1min=60s,Q=I2Rt =(2A)2×2Ω×60s=480J答:1min產生的熱量是480J.
不可以,超出額定電流,220除50=4.4大於一
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.