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posted by  jade387 on 11/4/2009 11:37:34 AM  |  status: Closed  |  Earned Karma: 50

Superposition

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Analog Circuits Electric Circuits (8th) by Nilsson 4 91P 11/4/2009 at 11:00:00 PM
Question Details:
Can you use superposition to find the voltage across a resistor in a circuit with a ground, please?
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posted by jade387 on 11/4/2009 11:53:53 PM  |  status: Live
Clarification Details:
Why was R2 not used?
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posted by Vidya K on 11/5/2009 6:31:14 AM  |  status: Live
Clarification Details:
Where do you want to use R2?
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posted by Vidya K on 11/4/2009 12:46:58 PM  |  status: Live
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Response Details:


I1 = V/(R1 + R3) = 12/(2000 + 1000) = 4mA
Voltage across 1kΩ = I x 1kΩ = 4m x 1k = 4V

Now consider the current source alone. Short circuit the voltage source.



I3 = 0.166A
Voltage across 1kΩ = I3 x 1k = 0.166 x 1000 = 166V
Total voltage across 1kΩ = 4 + 166 = 170V
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