A$-$ PRE$-$LAB:

$1-$ Consider the circuit shown in Fig. $1.$ Given that $R_1=1\mathrm{.}5k,R_2=1\mathrm{.}2k,R_3=1k$ and $R_L=1\mathrm{.}8k,$ find the voltage across $R_L$ using any other method except Thevenin's theorem. Verify the results using QUCS.

$2-$ Calculate the Thevenin equivalent for this circuit $($refer to Fig. $2)$ at terminals a$-$a$\text{'}.$ Find $E_{Th}$ and $R_{Th}.$

Fig. $2$

$3-$ What is the current flowing in the load resistor $R_L?$

$4-$ What is the voltage across $R_L?$

$5-$ Compare between the values of the voltages of $R_L$ in Figs. $1$ and $2$

$6-$ Find $R_{Th}$ and $V_{Th}$ using QUCS.

$7-$ Simulate the equivalent circuit using QUCS and compare between the calculated results with the simulated results

$8-$ Is Thevenin's theorem verified?

$9-$ Repeat for Norton's Theorem $($steps from $1$ through $8)$

Ingore qucs questions and solve it using norton theorm