1. For the network of Fig. 1.

a. Find the current I1 and I2.

b. Determine the voltage Vs.

2. For the network in Fig. 2.

a. Find voltageVs.

b. Calculate current I2.

c. Find the source currentIs.

3. Source conversion.

a. Convert the voltage source in Fig. 3(a) to current source.

b. Convert the current source in Fig. 3(b) to voltage source.

4. For the network in Fig. 4:

a. Replace all the current sources by a single current source.

b. Find the source voltage Vs.

5. For the network in Fig. 5:

a. Using the superposition theorem, determine the voltage across the 4.7Ω resistor.

b. Find the power delivered to the 4.7Ω resistor due solely to the current source.

c. Find the power delivered to the 4.7Ω resistor due solely to the voltage source.

d. Find the power delivered to the 4.7Ω resistor using the voltage source found in part (a).

e. How do the results of part (d) compare with the sum of the results to parts (b) and (c)? Can the superposition theorem be applied to power levels?

6. Thévenin Theorem

a. Find theThévenin equivalent circuit for the network external to the resistor R in Fig. 6.

b. Find theFind the current through R when R is 2Ω, 3Ω and 100Ω.