NODAL ANALYSIS

Node Analysis

- is well organized technique which relies on KCL.

Consider this is a circuit:

The 3 volts source which is connected in the reference and

non-reference node is Node A. Then, the -10 volts source

which is in node C.

Node A = 3V

Node C = -10V

But, when the voltage source is not connected in

reference node it is a SUPER-NODE.

Only Node B is unknown. So, by KCL

we can now get the equation by the sum of current entering

the node is equal to the current leaving the node.

I1 = I2 + I3

By Ohm's Law,

Then, we can now substitute the equation we get from

 OHM'S LAW to the equation we get from KCL.

For solving the current, we use ohm's law,

substitute the voltage in this equation.

I1 = 2 mA

I2 = 3 mA

I3 = -1mA