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阿Q吧 > 知道电流为毫安，平方后乘以电阻得到的是毫瓦吗？

知道电流为毫安，平方后乘以电阻得到的是毫瓦吗？

2025-03-15 05:50:08

推荐回答（5个）

回答1：

正确的做法是，

I = 0.01 安，R = 2 欧

P = I²R

= 0.01² × 2

= 0.0002 瓦

= 0.2 毫瓦

回答2：

不是。亳安10的负3次方安。平方后是10负6次方所以是微瓦。mAxV＝mW，mAX欧＝mV。mAXmV＝uW

回答3：

负载电流10mA ，2欧的电阻，功率是10*10*2=200mw0.2w
ma*ma*欧姆=mw
A*A*欧姆=w

回答4：

10mA＝0.01A
0.01×0.01×2＝0.0002W＝0.2mW

回答5：

0.2那个是对的，直接换算成A来算就不会出问题了

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