兩題physics .有關電的兩題希望高手出手 THX A LOT ^^"

用戶168050

2007-05-16 4:40 am

http://www.upload-picture.com/images/DIC31922.jpg

Find ...
1. Current I.
2. Voltages across 1-Ω, 2-Ω, 3-Ω resistor. (3 answers)
3. Power dissipated by 1-Ω, 2-Ω, 3-Ω resistor. (3 answers)
4. Total Power of the Dry cell.

http://www.upload-picture.com/images/oza31892.jpg
Find...
1.Current I, I1, I2, I3. (4 answers)
2. Voltages across 1-Ω, 2-Ω, 3-Ω,4-Ω resistor. (4 answers)
3. Power dissipated by 1-Ω, 2-Ω, 3-Ω,4-Ω resistor. (4 answers)
4. Total Power of the Dry cell.

回答 (1)

winnie

2007-05-16 5:02 am

✔ 最佳答案

http://www.upload-picture.com/images/DIC31922.jpg
1)12/(1+2+3)=2A
2)V across 1ohm: 2x1=2V
2 ohm:2x2=4V
3ohm:2x3=6V
3)Power: 1ohm:2x2=4W
2ohm:2x4=8W
3ohm:2x6=12W
4)Total power: 2x12=24W

http://www.upload-picture.com/images/oza31892.jpg
1) I=2.64A
I1=1.44A
I2=0.72A
I3=0.48A
2)V across 1,2,3 ohm:1.44V
4 ohm:4x2.64=10.56V
3)Power: 1ohm:2.0736W
2ohm:1.0368W
3ohm:0.6912W
4ohm:27.8784W
4)Total Power: 31.68W

第二part d steps有d skip左,不過都係用一路答ge資料就可以計到~~
我可以made左d mistakes....你check下啦~~

參考: myself

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兩題physics .有關電的 兩題 希望高手出手 THX A LOT ^^"

回答 (1)

兩題physics .有關電的兩題希望高手出手 THX A LOT ^^"