Electronics S1W2: Learn About Volts, Amps, Ohms & Ohm's Law

Defines Volts, Amps and Ohms; shows relationships in Ohm's Law. Learn to solve circuit problems.(Semester 1, Week 1)

Created byRichard Vannoy II

Last updated 5/2017

English

What you'll learn

Solve basic electronic circuit problems by applying Ohm's Law.
Define and explain the fundamental components of Ohm's Law; voltage, current and resistance
Describe the effects of increasing or decresing resistance or voltage in a simple electronic circuit.

Course content

3 sections • 11 lectures • 2h 7m total length

Introduction to Ohm's Law16:46
This lecture introduces you to a fundamental law of electronics, Ohm's Law. The law will be stated, and you will be shown the formula discovered by its inventor. There are four handouts which will be used by your instructor throughout the course.

When you have completed this lecture, you will be able to state Ohm's Law and have the handouts you will need to progress through the remaining lectures in this course.
Basic Components of Ohm's Law

Volts and Voltage, Part 117:53
There are four fundamental characteristics found in electronic circuits. This lecture, Part 1, and and the next lecture, Part 2, introduce you to the first of these: Voltage. Voltage will be defined, and the difference between DC and AC voltage explained. Voltage sources (things that produce voltage) will be identified and show, and analogies to voltage potential and water and piping systems will be used to assist your understanding of the concept.

You will understand the basic concept of voltage as a result of this presentation.
Volts and Voltage, Part 218:36
There are four fundamental characteristics found in electronic circuits. This lecture, Part 2, and and the previous lecture, Part 1, introduce you to the first of these: Voltage. Voltage will be defined, and the difference between DC and AC voltage explained. Voltage sources (things that produce voltage) will be identified and show, and analogies to voltage potential and water and piping systems will be used to assist your understanding of the concept.

You will understand the basic concept of voltage as a result of this presentation.
Volts and Voltage
Amps and Current, Part 115:34
This lecture, Part 1, and the next lecture, Part 2, will introduce you to Andre-Marie Ampere. His work in early electronics led the name for the unit of current, the ampere, to be named after him. You will be reminded that current flow is the movement of electrons in a conductor, and be shown the difference between Conventional Electron Flow Theory and Electron Flow Theory.

After the upcoming lecture on resistance, you will have the background required to understand and apply the concept of Ohm's Law, and use that law to solve simple electronic circuit problems.
Amps and Current, Part 212:15
This lecture, Part 2, and the previous lecture, Part 1, will introduce you to Andre-Marie Ampere. His work in early electronics led the name for the unit of current, the ampere, to be named after him. You will be reminded that current flow is the movement of electrons in a conductor, and be shown the difference between Conventional Electron Flow Theory and Electron Flow Theory.

After the upcoming lecture on resistance, you will have the background required to understand and apply the concept of Ohm's Law, and use that law to solve simple electronic circuit problems.
Amps and Current
Ohm's and Resistance9:23
The third of the three concepts required to understand and apply Ohm's Law to electronic circuits resistance, the opposition to current flow. This lecture will introduce that concept and give some examples of how it works, and what resistors look like.

After this lecture, you will be prepared to dive into Ohm's Law and learn the application of this law to solve for unknown quantities in electronic circuits.
Ohms and Resistance

Using Ohm's Law - The Three Forms13:13
The basic form of Ohm's Law, I = ER, can be algebraically manipulated into three forms. Since you will need all three forms in later training, this lecture shows how to derive the three forms.

You will then be ready to perform calculations to solve electronic problems using the appropriate form of the three forms given.
Ohm's Law Example: I = V / R7:40
In this first of the three forms of Ohm's Law, you will be given problems where you are given the voltage and resistance in a circuit, and you will be asked to compute and provide the correct amount of current flowing in the circuit.
Ohm's Law Example: R = V / I4:47
In this second of the three forms of Ohm's Law, you will be given problems where you are given the voltage and current in a circuit, and you will be asked to compute and provide the correct amount of resistance present in the circuit.
Ohm's Law Examples
Ohm's Law Example: V = IR3:47
In this third of the three forms of Ohm's Law, you will be given problems where you are given the resistance and current in a circuit, and you will be asked to compute and provide the correct amount of voltage present in the circuit.
Ohm's Law Example: Bulb and Batteries7:58
In this lecture, you will be shown a simple circuit, with a battery and a light bulb. Your instructor will walk you through exactly what happens when additional voltage is added to the circuit, and how to calculate the new values.
Ohm's Law Example Problems

Requirements

Students need to understand that current flow in electric and electronic circuits is the movement of electrons in the circuit. This background is covered in Week 1 of the course with the same name as this course.

Description

This course is a part of a larger set of courses that will teach you how electronic circuits work. The course semesters include: DC Electronics, AC Electronics, Transistor Theory, Solid State Devices, Communications and Digital Electronics.

This course focuses on the first semester of this training, DC Electronics, and the fundamental law of electronics, called Ohm's Law, named after the person who discovered it almost 140 years ago. You will learn how this Law works and how to accurately apply it to electronic circuits.

Learn and Master Basic DC Electronics

·Define and explain the relationships between voltage, current and resistance

·Understand and apply Ohm's Law to basic electronic circuits

·Understand the necessary computations to solve any simple circuit and accurately determine the four quantities voltage, current, resistance or power given any two of these.

A Powerful Tool for You

This course teaches you the fundamental Law that is the basis for all electronics training that will follow. Electronic engineers, repair technicians, and hobbyists all need this knowledge to excel in their work.

This course is part of the beginning of a training journey that will lead to the equivalent knowledge that you would gain by attending a college electronics degree program at a community or for-profit college.

Contents and Overview

This course contains eleven lectures and over two hours of content. It is designed for anyone, regardless of experience level, who wishes to learn the fundamentals of how electronics works.

You will learn about the four fundamental characteristics of electronic circuits: Voltage, Current, Resistance and Power.

You will learn how to understand and apply Ohm's Law, the fundamental relationship between voltage, current and resistance. Your instructor will guide you through with detailed examples, leading to exercises and quiz questions where you demonstrate your ability to accurately and quickly solve circuit problems.

Who this course is for:

This course is for anyone wishing to learn how electronic circuits and systems work. The concepts apply to all electronics, and are appropriate for professionals and hobbyists.

Electronics S1W2: Learn About Volts, Amps, Ohms & Ohm's Law

What you'll learn

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Course content

Introduction to Ohm's Law1 lecture • 17min

Voltage, Current and Resistance Definitions5 lectures • 1hr 14min

Ohm's Law5 lectures • 37min

Requirements

Description

Who this course is for: