| P |
| U |
| U2 |
| R |
| U2 |
| R |
| P額 |
| U額 |
| U |
| I2 |
| P3 |
| P3′ |
| ||
|
| 1 |
| 9 |
| U′ |
| U |
| 1 |
| 3 |
| U′ |
| U |
| R′ |
| R′+R2 |
| 1 |
| 3 |
| R′ |
| R2 |
| 1 |
| 2 |
| P1 |
| P2 |
| I2R2 |
| I′2R2 |
| I2 |
| I′2 |
| 81 |
| 100 |
| I |
| I′ |
| 9 |
| 10 |
| U額2 |
| P額 |
| ||
| R2 |
| (12V)2 |
| 24Ω |
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