**In this chapter you will learn about:**

- To define a complex number
- To represent complex numbers
- To perform mathematical operations on complex numbers (addition subtraction, multiplication and division) both in Cartesian and polar coordinates
- To represent inductive reactance, capacitive reactance, and impedance in both rectangular and polar notation
- To convert from rectangular to polar and vice versa: admittance, conductance, and susceptance
- Impedance and admittance triangles
- Solution of problems involving complex numbers

**Real and Imaginary Numbers**

Alternating voltage or current is generally ...

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