- #1
doublemint
- 141
- 0
Hey everyone,
I am trying to solve for the circuit that I have attached.
So I know that for a opamp, it does not draw any currents into its input side and the nodes b and c are the same potential. To figure out the potential at node b, i need to know I_6, but that 6k resistor is messing everything up.
If I assume that the 6k resistor is parallel to other 6k resistors then I can solve for I_6=1 mA
However, if that is the case then I_12=1 mA as well. But that means that the resulting voltage at node d is 0...which does not make sense..
Furthermore, from node c, I can use that to solve for the potential at node d.
I cannot say all three 6k resistors are in series since from that diagram it does not seem to be unless the ground has to do something with it.
Am I missing something here?
Here is my math:
V_a=12V
I_6=12V/12k = 1mA
therefore: V_b=V_c=6V
I_3=(V_c-3V)/3k = 1mA
V_d=V_c+9I_3=6+9=15V
this does not make sense since from V_a, I_12=1mA and that would result in V_d=0V...
DM
P.S sorry the diagram is so small!
I am trying to solve for the circuit that I have attached.
So I know that for a opamp, it does not draw any currents into its input side and the nodes b and c are the same potential. To figure out the potential at node b, i need to know I_6, but that 6k resistor is messing everything up.
If I assume that the 6k resistor is parallel to other 6k resistors then I can solve for I_6=1 mA
However, if that is the case then I_12=1 mA as well. But that means that the resulting voltage at node d is 0...which does not make sense..
Furthermore, from node c, I can use that to solve for the potential at node d.
I cannot say all three 6k resistors are in series since from that diagram it does not seem to be unless the ground has to do something with it.
Am I missing something here?
Here is my math:
V_a=12V
I_6=12V/12k = 1mA
therefore: V_b=V_c=6V
I_3=(V_c-3V)/3k = 1mA
V_d=V_c+9I_3=6+9=15V
this does not make sense since from V_a, I_12=1mA and that would result in V_d=0V...
DM
P.S sorry the diagram is so small!