| I1 |
| I2 |
| ||||
|
| U1 |
| U1′ |
| R3 | ||
|
| 2 |
| 3 |
| 4 |
| 3 |
| U2 |
| U2′ |
| I1R2 |
| I2R2 |
| I1 |
| I2 |
| 4 |
| 3 |
| I1 |
| I2 |
| ||
R2+
|
| 4 |
| 3 |
| 1 |
| R并 |
| 1 |
| R1 |
| 1 |
| R2 |
| R1R2 |
| R1+R2 |
| I2 |
| I3 |
| R并 |
| R2+R3 |
| ||
| R2+R2 |
| R1R2 |
| R1+R2 |
| 1 |
| 2R2 |
| 1 |
| 3 |
| R1 |
| R2 |
| 2 |
| 1 |
| 1 |
| 2 |
| 1 |
| 2 |
| U | ||
R2+
|
| 9V |
| 6Ω+3Ω |
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