INTRODUCTION

Building on your knowledge of electrical systems, this assignment introduces parallel circuits. You will learn how resistance and current behave in parallel circuits and practice related calculations. Since you have already studied series circuits, this will allow you to compare different circuit configurations, preparing you for complex circuit design in manufacturing.

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OBJECTIVE

Learn about parallel circuits and calculate resistance of a parallel circuit.

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LAB

In the previous assignment, you learned and successfully completed calculating resistance in series circuits. In previous modules, you learned that parallel circuits work a little differently than series. Now, you'll combine these two concepts.

You will complete a similar exercise for calculating resistance in parallel circuits. First, watch the following two videos to learn how to properly calculate resistance. Then, review the materials and quiz expectations. Finally, complete the quiz.

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VIDEOS

First, watch the YouTube video. This will show you how to solve the parallel circuit problems. Then, watch the two videos that will walk you through problems similar to the ones you will be asked to complete within the quiz portion of this page.

https://www.youtube.com/watch?v=HtFMUKDOzSw

Example: Calculation

This was from a previous example. Note that it uses resistors as loads. We will be using a fan, light and solenoid. However, the method for calculation is the same regardless of what load is being used. The material is still relevant.

Parallel Resistance equation:

$LaTeX: R_{tot}=\frac{1}{\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}+\ldots\frac{1}{R_{\mathbb{N}}}}$

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THE QUIZ

For this quiz, you will be calculating and measuring resistance in four circuits. A few notes in order to be successful:

All answers should be recorded in ohms (not kΩ, KΩ, mmΩ, etc., just regular Ω). The quiz is set up so you can only submit a numeric value. Therefore, do not submit anything that's not a number, meaning you do not need to include "ohms" or "Ω" in your answer. The number is sufficient.
Calculate the resistance. All answers should be a whole number. During the calculation process, round to 0.0001.

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MATERIALS + TROUBLESHOOTING REFERENCE PAGES

Materials

Calculator
Paper
Pencil or Pen

Troubleshooting Reference Page

Units