Picture of Electronics for Absolute Beginners, Chapter 3
Welcome to Chapter 3!

In this chapter we will go through:

1. Series Circuits
2. Voltage Divider Rule
3. Applied Voltage
4. Kirchoff's Voltage Law
5. Power in Series Circuit
6. Effects of Open in Series Circuit
7. Effects of Close in Series Circuit
8. Designing a Series Circuit

Step 1: Series Circuit

Picture of Series Circuit
A series circuit is a a circuit with just one path for current to flow.

In a series circuit:

1. Resistance is additive
2. Current is constant
3. Voltage drops are additive

Click on the images attached to this lecture to see what a series circuit looks like.
pcarew1 year ago
Step 6 Diagram mistakes
Voltage at point A = 100V
Voltage at point B = 60V
Voltage at point C = 0V
elektrobot (author)  pcarew1 year ago
You are absolutely correct, good catch!

Since the voltage flowing AFTER R1 (10kΩ) would only be a total of 100V. Therefore,
VR2 = (120*20)/60 = 40V

THEN, Voltage at V2 after Voltage Drop is:
V2= V1-VR2
V2= 100-40
V2= 60V

Correspondingly, the voltage flowing between R2 and R3 is 60V. Hence the equation must follow:

VR3 = (120*30)/60 = 60V

Then the voltage after passing through R3 (30kΩ) is:
V3 = V2 - VR3
V3 = 60-60
V3 = 0V
OktamV9 months ago

Keep it up!

I thought current flows from negative to positive, not positive to negative....

muhammad aslam10 months ago

hello sir

please post chapter four

kt_0271 year ago

very comprehensive. Thx

Tinkerteem3 years ago
thanks alot i'm a beginner.. waiting for chapter 4 :)
elektrobot (author)  Tinkerteem1 year ago

thank you for your feedback.

cirvirlab2 years ago
Once when you wright your set of the equations, you can calculate it online on:

elektrobot (author) 3 years ago
geeks and company,

i have been busy with work and my car lately. my next chapter will cover parallel circuits. i should be able to publish it by the end of january.

elektrobot (author) 3 years ago
I have some complaints about the clip art I used and was asked to revise them to something related to electronics.

I think it is a reasonable request, so I shall work on finding relevant clipart for this chapter. I value all of your comments, questions and suggestions highly, and I take them all in consideration.

If you don't understand something and need further explanation, please don't be timid with your questions, i will try to answer them to the best of my knowledge.

elektrobot (author)  elektrobot3 years ago
Ladies and gentlemen, I am done updating the images. You will find these images helpful in understanding the concepts introduce in this Chapter.