3/2 Resistors and Ohms Law & Dependent Sources and MOSFETs

We were given a circuit above and were asked to determine the number of branches, loops and nodes in the circuit.
First, we didn't count the nodes between the current source and the resistor, so we came up with different answer.
There are 5 nodes and 7 branches, according to the fundamental theorem of network topology:

b = L + N − 1

We got 3 independent loops in this circuit.

Given the circuit above

Find I and Vab in the circuit

By applying KVL to the loop, we got I = 4A, and Vab = 28V.

We did two labs.

One is Resistors and Ohms Law - Voltage-Current Characteristics

Another one is Dependent Sources and MOSFETs

Resistors and Ohms Law - Voltage-Current Characteristics

The resistor we used in this lab, and the resistance value of this resistor is 98.2 ohms.

The data we got by changing the voltage 

Because the voltage source only has 5 different voltage options, there are only five different data.

From the graph, we can that the measured resistance value of the resistor is 97.78 ohms.

Dependent Sources and MOSFETs

We used the same resistor which the resistance value is 98.2 ohms.

The photos above are the basic set up for this lab.

The table and the graph above can help us determine the threshold voltage.

From the table and the graph above, the threshold voltage is around 0.69 V.

The transistor is behaving like VCCS (Voltage Controlled Current Source).

Now we only consider the data from 0.66 to 0.78.

From the graph above, we used a best fit line to determine the value of g for circuit, and the value g is 349.93.

Summary

We learned the fundamental theorem of network topology, KVL, KCL, and how to use MOSFETs today by doing some of the examples in the class and doing two labs to make sure that we know how to use Waveform Generator. Although our group didn't finish the lab in the class, we did it on Friday. After struggling to figure out how to produce two voltage source, we finished the lab very quickly.