Module 14: Electric Current

Module 14: Electric Current

Introduction

When there is charge in a position where it can move to lower potential, it does so. This is rather like mass moving to a lower height. When charge moves, this is what we call an electrical current. There may be only three lessons in this section, but there are three big lessons, and electrical circuits are one of the most important parts of this course. 

Learning Objectives

Upon completion of this module, students will be able to: 

  • Describe what makes good or bad conductors.
  • Explain the process of electrocution.
  • Describe parallel and series circuits.
  • Calculate the current and voltage at any point in the circuit.
  • Draw an example of a circuit.
  • Construct a circuit.
  • Explain alternating current.
  • Calculate power in an electrical circuit.

To Do List

1. Watch the Video Lectures (links below)
2. Complete the Practice Problems (links below)
3. Take the Module 14 Quiz
4. Complete the Exam Practice Problems for Module 14

Lessons

Lesson 14.1 What is Electric Current?

Electric current arises when electrons flow through a material. Here you will discover what makes materials good at conducting electrons and learn basic circuit design.

Lesson 14.2 Circuit Types

Circuit design can be broken into two main categories: series and parallel circuits. This lesson will describe the unique features of each and give you practice solving for variables in circuits combining both types of designs.

Lesson 14.3 Alternating Current and Power

Alternating current is an important phenomenon used in my applications. Alternating current and ways to calculate power in a circuit are described below.

Quiz

Once you have watched the lectures and completed the practice problems, you should demonstrate your understanding by taking the Module 14 Quiz. Be sure to submit the quiz before its deadline

Coming Up

In the next Module we will learn about Magnets and Magnetism