# Homework #5. Linearity, Superposition, & Source Transformation

• Read Sections 4.1 to 4.4 of Alexander & Sadiku's Fundamentals of Circuit Analysis (6th edition).
• Make sure you understand the answers to Review Questions 4.1, 4.3, and 4.8 on page 159. Quiz questions will be similar to these Review Questions or Review Questions from earlier chapters.
• Turn in solutions to Problems 4.1, 4.6, 4.8*, 4.13*, 4.20**, 4.25** and 4.26** on pages 160 to 163.
• *For the superposition problems (4.8 and 4.13), your solutions must include drawings showing each source acting by itself, along with your calculations. Hint for 4.8: Your task will be easier if you replace the series 5-Ω and 4-Ω resistors by a single equivalent 9-Ω resistor. You can ignore the sentence telling you to check your answer with PSpice or Multisim.
• **For the source-transformation problems (4.20, 4.25, and 4.26), your solutions must include drawings showing the transformed circuits, along with your calculations. Hint for 4.20: This circuit will become a simple parallel circuit if you transform the three voltage sources into current sources. Then you can combine parallel resistors into a single resistor and parallel current sources into a single current source. Then, finally, transform that current source into a voltage source. Hint for 4.25 and 4.26: Each of these circuits will become a simple series circuit if you transform all current sources into voltage sources. You can ignore the sentence telling you to check your answer with PSpice or Multisim.