Node voltage practice problems
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Read the node-voltage method class notes.
For the circuit shown,
- R1 = 2.7 kΩ
- R2 = 2.2 kΩ
- R3 = 1.2 kΩ
- VS1 = 12 V
- VS2 = 3 V

Use the node-voltage method to find the voltage at node a with respect to the indicated ground.