# Lesson 3 — Kirchhoff's Laws

<p class="block-synopsis">KVL and KCL, labeling polarity and current direction, and checking with conservation of power.</p>

**Objectives covered**

- **1.1** — I can calculate the voltages, currents, and power associated with devices in a simple DC-powered circuit using tools such as KVL, KCL, voltage and current dividers, Ohm’s Law, and the power equation.

<div class="block-toc">
  <a class="bt-card bt-reading" href="../Block1Reading/Obj01/ECE215_Obj01_Reading.html">
    <span class="bt-kind">Reading</span>
    <h4>DC Circuit Analysis</h4>
    <p>The course reading for Objective 1.1.</p>
  </a>
  <a class="bt-card bt-flashcards" href="L03_Flashcards.html">
    <span class="bt-kind">Flashcards</span>
    <h4>Review deck</h4>
    <p>Key terms, equations, and ideas from this lesson, in a self-test deck.</p>
  </a>
  <a class="bt-card bt-slides" href="../_static/slides/ECE_215_Lesson03.pdf">
    <span class="bt-kind">Slides</span>
    <h4>Lesson 3 deck</h4>
    <p>The slides used in class, as a PDF.</p>
  </a>
  <a class="bt-card bt-practice" href="../downloads.html">
    <span class="bt-kind">Practice Problems</span>
    <h4>Work these before the quiz</h4>
    <p>Ungraded problems with answers, on the downloads page.</p>
  </a>
</div>