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- Thread starter lostinhere
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Astronuc

Staff Emeritus

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The node just above the 10 V source is -10V with respect to ground, i.e. the negative terminal of the 20V source.

- #3

lostinhere

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I have this much

Node 1: between the 25k resistor and the 11mA source)

node 2: between the 500 ohm resitor, 10v source, 1k resistor and 500 resistor and the 11mA source

V1: voltage across the 250 resistor

V2: voltage arcross the 1k resistor

reference node at the bottom of the pic

node1: (V1-20)/25K+V1/250+.011+(V1-V2)/500=0

node2: -.011+V2/1000+(V1-V2)/500+...=0

I'm not quite sure how to hande the 10v supply.

Node 1: between the 25k resistor and the 11mA source)

node 2: between the 500 ohm resitor, 10v source, 1k resistor and 500 resistor and the 11mA source

V1: voltage across the 250 resistor

V2: voltage arcross the 1k resistor

reference node at the bottom of the pic

node1: (V1-20)/25K+V1/250+.011+(V1-V2)/500=0

node2: -.011+V2/1000+(V1-V2)/500+...=0

I'm not quite sure how to hande the 10v supply.

Last edited:

- #4

lostinhere

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.....nvm

- #5

berkeman

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There's only one unknown -- the voltage V1. Call the bottom rail ground, then you only have to solve for V1 to know all the voltages and currents in the circuit. The V2 is just -10V, set by the voltage source on the right.lostinhere said:I have this much

Node 1: between the 25k resistor and the 11mA source)

node 2: between the 500 ohm resitor, 10v source, 1k resistor and 500 resistor and the 11mA source

V1: voltage across the 250 resistor

V2: voltage arcross the 1k resistor

reference node at the bottom of the pic

node1: (V1-20)/25K+V1/250+.011+(V1-V2)/500=0

node2: -.011+V2/1000+(V1-V2)/500+...=0

I'm not quite sure how to hande the 10v supply.

The answer for V1 is a nice round number (hint), and you can check your work by using that answer to figure out the 3 unknown currents flowing in/out of the V1 node. They should sum to zero, or you didn't solve your node 1 equation above correctly.

Post the answer!

- #6

rockerboi

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its so easy and so basic...my professor gives us too complicated circuits..

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