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Question about Complex Numbers: Introduction

Mathematics

Originais Teachy

Complex Numbers: Introduction

Medium

(Originais Teachy 2025) - Question Medium of Mathematics

In an electrical engineering context, we represent the impedances of two circuit components with complex numbers. If the impedance of the first component is Z₁ = 20 + 15i Ω and the second one is Z₂ = 10 - 5i Ω, what is the real part of the total impedance for these components connected in series?
a.
35 Ω
b.
30 Ω
c.
20 Ω
d.
25 Ω
e.
10 Ω

Answer sheet:

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Answer sheet

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