W＝I2Rt只适用于纯电阻电路 何意
W＝I2Rt只适用于纯电阻电路 何意
物理人气：136 ℃时间：2019-12-26 15:53:45
优质解答
在纯电阻电路中,电能全部转化成内（热）能,所以可以使用本公式,但在非纯电阻电路中,电能不仅仅转化为热能,同时转化成机械能等（如电风扇,风扇转动电能转化成机械能,但风扇发热是电能转化成了热能）,因此W就要大于I2Rt.
我来回答
类似推荐
猜你喜欢
- 1last night,he had his house_______.A.break into B.break in C.borken into D.broken in
- 2连词成句：1.your,did,go,a,to,fast,food,cousin,restaurant,yesterday?
- 3关于x的方程ax平方+bx+c=m(a不等于0)的实数根是抛物线y=ax平方+bx+c于直线______的公共点的横坐标
- 4x/（x-3）-2/（x+3）=1【x等于几
- 5扭矩和弯矩有什么区别?怎么判断一个剪力在截面上是产生扭矩还是弯矩?
- 6He has lived in my hometown-------twenty years --------1986
- 7The Chinese have the story of Chang'e.这句话啥意思?
- 8奇函数y=f(x)的定义域是R,当x≥0时,f(x)=2x-x²,若当x∈[a,b]时,y=f(x)的值域是[1/b,1/a],求a,b的值
- 9怎么看电子电路图中电压、电流变化?
- 10when time had finish i went and bought another time thinking i will be able to cacth u back ..