- #1

- 145

- 0

Use the node-voltage to find v1 and v2 in the circuit below(see picture)

4.8)

http://s716.photobucket.com/albums/ww168/Pitoraq/?action=view¤t=DSC_0204.jpg

http://s716.photobucket.com/albums/ww168/Pitoraq/?action=view¤t=DSC_0206.jpg

4.26)

http://s716.photobucket.com/albums/ww168/Pitoraq/?action=view¤t=DSC_0205.jpg

http://s716.photobucket.com/albums/ww168/Pitoraq/?action=view¤t=DSC_0207.jpg

4.8)

v1 + (v1-v2)/8 = 6 (node 1)

1 + v2/120 = (v2-v1)/8 (node 2)

4.26

1/R(eq) = 1/150 + 1/75 = 30 ohm

2 - ((-v1-25)/50) + v1/150 + v1/75 = 0

4.8)

After combining node 1 and node 2 i got v = 146 v which is wrong

what about the r=80 resistor ?

The answer should be 120v,96v

4.26)

I got v1 to be -37.5 v and p = (-37.5)*2 = -75 W

The answer should be

a) -37.5 V,75W

b) -37.5 v, 75W

4.8)

http://s716.photobucket.com/albums/ww168/Pitoraq/?action=view¤t=DSC_0204.jpg

http://s716.photobucket.com/albums/ww168/Pitoraq/?action=view¤t=DSC_0206.jpg

4.26)

http://s716.photobucket.com/albums/ww168/Pitoraq/?action=view¤t=DSC_0205.jpg

http://s716.photobucket.com/albums/ww168/Pitoraq/?action=view¤t=DSC_0207.jpg

## Homework Equations

4.8)

v1 + (v1-v2)/8 = 6 (node 1)

1 + v2/120 = (v2-v1)/8 (node 2)

4.26

1/R(eq) = 1/150 + 1/75 = 30 ohm

2 - ((-v1-25)/50) + v1/150 + v1/75 = 0

## The Attempt at a Solution

4.8)

After combining node 1 and node 2 i got v = 146 v which is wrong

what about the r=80 resistor ?

The answer should be 120v,96v

4.26)

I got v1 to be -37.5 v and p = (-37.5)*2 = -75 W

The answer should be

a) -37.5 V,75W

b) -37.5 v, 75W

## Homework Statement

## Homework Equations

## The Attempt at a Solution

Last edited: