Electromagnetic Induction

Module Overview

This module concentrates on study of various concepts in electromagnetic induction, such as magnetic flux, induced emf and induced current in a conducting loop through the introduction to Faraday’s and Lenz’s laws. A derivation illustrating the energy transfer process and the balance of power due to electromagnetic induction is presented as well. Finally, the properties of inductors including inductance, stored energy and equivalent inductance in electric circuits are discussed in the module.

Introduction

The discussions in this module are heavily focused on the basic principles of Faraday’s and Lenz’s regarding electromagnetic induction. Many mathematic tools including derivative, integration, vector dot and cross products permeate the module. The right-hand rule is often referenced in the determination of induced emf and current direction which is one of the key concepts of this module. The last two units of the module are dedicated to inductors’ operating principle and properties; through inductors students can witness the linkage between electromagnetism and practical applications.

This module consists of a sequence of 9 videos with 2 step-by-step solved examples and 6 self-assessment questions. It is expected that the course instructor, will supplement the module with additional questions and possibly few laboratory exercises.

Prerequisites

Before starting this module, it will be helpful to be familiar with:

  • Vector dot product and cross product,
  • Integration and derivative,
  • Magnetic field and field lines.

Learning Outcomes

  • Be able to calculate magnetic flux through a loop
  • Understand how Faraday’s law relates to induced emf and induced current in a conducting loop
  • Determine the direction and size of induced emf using Lenz’s and Faraday’s laws
  • Calculate the amount of energy stored in an inductor
  • Analyze inductors connected in a network

Explore Module

Please note that this preview is intended for exploration purposes only. If you'd like to use this module in one of your courses, to ensure playback and tracking, you must upload the SCORM package (downloadable below) to your institution's Learning Management System (ex. Blackboard, D2L, Moodle, etc).

Related Project Resources

TypeTitleAuthorDescription
FileElectromagnetic Induction - MCQ (Quiz)
(PDF, 115 KB)
Prof. Belinda WangThe multiple choice questions are intended for self-assessment of learner’s conceptual understanding of the module content
FileInduction Example
(PDF, 87 KB)
Prof. Belinda WangA step-by-step example is intended to show learners how to apply concepts taught in the lecture videos to analyze and solve problems.
FileInductance Example
(PDF, 74 KB)
Prof. Belinda WangA step-by-step example is intended to show learners how to apply concepts taught in the lecture videos to analyze and solve problems.
FileGlossary
(PDF, 142.59 KB)
Prof. Belinda WangThis glossary contains definitions for the modules: Electric Charges and Forces, Electric Fields, Electric Potential and Potential Energy, Capacitance and Capacitor, Magnetic Fields and Forces, and Electromagnetic Induction.
ImageMagnetic Flux
(JPG, 197 KB)
Prof. Belinda Wang
ImageElectomagnetic Induction
(JPG, 38 KB)
Prof. Belinda Wang
FileV1_2015_Electromagnetic Induction (Storyline SCORM Package)
(ZIP, 2.2 MB)
Prof. Belinda WangThis Articulate Storyline SCORM package can be uploaded into your institution's Learning Management System.
FileV2_2021_Electromagnetic Induction (Rise SCORM Package)
(ZIP, 2.2 MB)
Prof. Belinda WangThis Articulate Rise SCORM package can be uploaded into your institution's Learning Management System.
VideoElectromagnetic Induction - IntroductionProf. Belinda WangIntroduction to Electromagnetic Induction
VideoFaraday's LawProf. Belinda WangFaraday's law is described in this video.
VideoElectromagnetic InductionProf. Belinda WangThe concept of electromagnetic induction is introduced in this video
VideoLenz's LawProf. Belinda WangLenz's law is described in this video
VideoFaraday's Law ExampleProf. Belinda WangAn example using Faraday's and Lenz's laws
VideoInduction-Energy TransferProf. Belinda WangThe energy transfer process in electromagnetic induction
VideoInductorProf. Belinda WangThe definition of inductance of an inductor is introduced in this video
VideoInductor-Stored EnergyProf. Belinda WangThe stored energy in an inductor is discussed in this video
VideoInductive NetworkProf. Belinda WangThe equivalent inductance of parellell or series connected inductors