Hi everyone from newbie (in electronics and this forum)
I am trying to solve problem 4.2-2 (Node Voltage Method) from Introduction to Electric Circuits, 9th Edition
and I wrote following equation:
1. V1/5 + 1 + (V1 - V2)/20 = 0
2. -2 + (V2 - V1)/20 + (V2 - V3)/10 = 0
3. -1 + (V3 - V2)/10 + V3/15 = 0
and get these results:
V1 = - 0.1818182 ; V2 = 19.090909 ; V3 = 17.454545
but the textbook and SPICE tell me that results are:
V1 = 2; V2 = 30; V3 = 24
Could you tell what I am doing wrong?
And the second problem is 4.6-5 (Mesh Currents Method) from the same textbook.
I am familiar with Mesh Currents Method but could anyone guide me how to write equation in this case?
I am trying to solve problem 4.2-2 (Node Voltage Method) from Introduction to Electric Circuits, 9th Edition
and I wrote following equation:
1. V1/5 + 1 + (V1 - V2)/20 = 0
2. -2 + (V2 - V1)/20 + (V2 - V3)/10 = 0
3. -1 + (V3 - V2)/10 + V3/15 = 0
and get these results:
V1 = - 0.1818182 ; V2 = 19.090909 ; V3 = 17.454545
but the textbook and SPICE tell me that results are:
V1 = 2; V2 = 30; V3 = 24
Could you tell what I am doing wrong?
And the second problem is 4.6-5 (Mesh Currents Method) from the same textbook.
I am familiar with Mesh Currents Method but could anyone guide me how to write equation in this case?