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COURSE NO: E03-004
Course Highlights

This online engineering PDH course presents the topic of inductance and its role in the relationship of current, magnetism, and motion. The relationship of current, magnetism, and motion is important to the topic of inductance.


Inductance is the property of an electric circuit component that opposes any change in electric current. It is a measure of the amount of magnetic flux produced for a given electric current and is designated by letter "L". An inductor is a component designed to produce a specific inductance i.e. having no resistance or capacitance. An inductor, when subjected to an increasing electrical current flow, generates a back voltage that opposes this current. Inductance quantifies how much energy an inductor can store and is expressed in henrys (h). An inductor consists of at least one winding of wire, but it usually has more. Examples of inductors or devices having inductance are transformers, chokes, coils relays and motors.


This 3 PDH online course is applicable to electrical engineers, design and construction personnel, technical staff and facility personnel who are interested in gaining a better understanding of inductance.

Learning Objectives

This PE continuing education course is intended to provide you with the following specific knowledge and skills:

  • Define the term "inductance", "induced emf" and "counter emf"
  • State Lenz's law
  • List five factors that affect the inductance of a coil and state how various physical changes in these factors affect inductance
  • State the principles and sequences involved in the buildup and decay of current in an LR series circuit
  • State the three types of power loss in an inductor
  • Define the term "mutual inductance" and "coefficient of coupling"
  • Given the inductance values of and the coefficient of coupling between two series-connected inductors, solve for mutual inductance, M
  • Write the formula for the "total inductance" of two inductors connected in series-opposing
  • Given the inductance values of and the mutual inductance value between two coils connected in series-aiding, solve for their combined inductance, LT
Course Document

In this professional engineering CEU course, you need to review Chapter 2 of Module 2 titled "Inductance" of the Naval Education and Training Materials (NAVEDTRA 14174), Electricity and Electronic Training Series.

To view, print and study the course document, please click on the following link(s):
Inductance (781 KB)
Course Quiz
Once you complete your course review, you need to take a multiple-choice quiz consisting of fifteen (15) questions to earn 3 PDH credits. The quiz will be based on Chapter 2 of Module 2 of this NAVEDTRA publication.


The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you will be able to print it after we receive your payment.) For your convenience, we will also email it to you. Please note that you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and take the quiz, please click on: