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I just want clarify something before we start our new topic for today. I think you realized why I'm posting such very basic topic. This is not to insult your intelligence but the purpose of this is for you to comprehend well the basic first, because in reality some of you do not understand the basic. This is one of the common mistakes of the beginners especially taking up the course like Electrical Engineering . If you would ask me if I have a plan of posting an advanced concept. Simply the answer is YES , PERIOD. But this is after posting up all the basic concepts. Please bear with me for a sort of introduction. Just want to clarify something. Moving on... Resistance in Series Circuit Have you already read the definition of a series circuit in your Physics? Well, if you forgot it already I will define it for you again to refresh your mind. If you still remember our example of a light bulb connected across the battery source, that's already a typical example of a series circui...

Let's continue of what we have discussed yesterday before we go on the full discussion of a Series Circuit which will be our next topic that we will going to study here in Learn Electrical Engineering for Beginners . Today, we will be dealing on how the resistor color coding is being used and how do we going to interpret it to obtain the reading. Then, afterward s we will touch a little bit on how the resistance is being measured. That's all will be discussed within this new post. Let's begin now... timer start now! The Resistor Color Code We all know that we can find the resistance value of any resistor by using an ohmmeter. But what if we don't have an ohmmeter to use? Most of the case we can find the resistance value easier by interpreting its marking. Some resistors like wire-wound resistor have its printed value in ohms in their body. If they don't have the mark, you would require to use an ohmmeter. An example of a resistor which usually have all of the data p...

Now that you have learned the basic concept of Ohm's Law, we can now proceed in discussing the use, properties, and construction of resistors. All you can learn it here in Electrical Engineering . Before we continue our study of circuits, we need to know more about resistance and resistors though we have touched it a little on my previous post. But its just a review. Today, it would be a bit deeper. We know that there is a certain amount of resistance in all electrical equipment which we use. Sometimes, this resistance is not enough to control the flow of current to the extent desired. If you did not get my point here, let's have a few example of this. I will going to give an example by illustration as what had shown below. The circuit shown below, a switch and a current limiting resistor are used to control the flow of current through the motor. When starting a motor, the switch is kept open and the resistance is thereby added into the circuit to control the flow of current. A...

I just can't wait for another morning without my new post here in Learn Electrical Engineering for Beginners. It's going interesting here because I've noticed that there are new another batch of subscriber who want to learn about Electrical Engineering . Since you've found this site, you're halfway to learning the Electrical Engineering. For those who are new in this site, you can still catch up with our previous 2 last topics here. What is Electric Circuit - Part 1 What is Electric Circuit - Part 2 Ok, let's begin with our new basic topic. The Relationship of Voltage, Current, and Resistance This next topic, you will learn about Ohm's Law, this is one of the most basic and important that you will use throughout your career here in Electrical Engineering . The concept is just simple: given a constant resistance in a circuit, the current flow increases as the voltage applied to the circuit increases. Given a constant voltage (emf) applied to the circuit, c...

Before I proceed with our new topic for today, I just want to give thanks for those who are currently subscribed here in Learn Electrical Engineering for Beginners . I hope this will be a helpful site for you which I will always give a full and detail information for every subject matter. Well, it's enough for my short introduction because I'm already running out of time for the updates. Yesterday I had mentioned on my previous post about our topic on full definition of Electric Circuits that I will going to differentiate between DC and AC Circuits. Please keep in mind that after discussing the difference between the two, I will going to discuss first to you all DC Circuits related topics so that we would not be confused. The principles that we will be discussing here in DC Circuits will also be used again when we touch AC Circuits. Please keep that in mind and this is very important. I just want to keep my ideas and discussions organize here in Electrical Engineering site. ...

Last time we have a little review of basic Physics. The reason why I included those topics here in Electrical Engineering as a beginning topic because those topics are mostly given in the board exam during our time. Please bear with me for three times posting for I have to do a little SEO for this blog. The reason why I'm doing this is to drive more traffic to this site. I was currently standing number 6 for a keyword Electrical Engineering for Beginners for which this site is really intended to. Anyway, let's begin with our new topic for today. This is already the start of our major discussion where every detail should be understand by everyone. The Electric Circuits Since we will be dealing with electric circuit starting today up to the rest of the topic, it is recommended that you should have an accurate picture of what electric circuit is and how the electric current behaves on it. Just recall for a moment what we had reviewed on our previous topic about the current flow o...

As I promised last time, I will going to show you the solutions to teasers on our previous topic about the Factors Affecting Resistance here in Electrical Engineering . By the way, this topic is still covered on our review of basic Physics for this is very important one when we reached our major topics in this Electrical Engineering course. Last time, I leaved you four worded problems in order for you to analyze and understand the principles fully. But if you still running out of time to solve it, I will show to you it now. The first problem given was: Problem 1 : The resistance of a copper wire 2, 500 cm long and a 0.090 cm in diameter is 0.67 ohm at 20 degree celcius. What is the resistivity of copper at this temperature? The solution here is quiet simple. We just have to substitute the given values from the formula since we have uniform units: p = RA/ l = 0.67 ohm x [ TT ( 0.090 cm) ^2/ 4 ] / 2, 500 cm     = 1.7 x 10 ^-6 ohm.cm - answer The unit of resistivi...