SLC21/WK2: Introduction to Basic Electrical Circuits & Cable Joint.

Dear Professor, @solaymann and @mahadisalim I thank you very much for organizing this contest. I am very happy to participate in this contest because it is very interesting. I invite three of my friends @meheruntinni, @sahar78 and @watti to be participants in this contest.

What is an Electrical Circuit?

An electrical circuit is a complete path or line for the flow of an electrical current.

It consist of these followings!

• Source of supply (i.e battery)

• Connecting Wires

• Current flow controller (switches)

• Circuit Breaker and fuses ( protective devices)

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Importance of Circuits in Electrical Engineering?

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• In electrical engineering, engineers use electrical circuits to distribute power and to flow electric current.

• Electrical Circuit also serves as a safety in electrical engineering. For example, such as circuit breakers. They automatically shut off in case of current. These mostly protect us from electrical shocks and fire.

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B. Difference Between Series-parallel Circuits?

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Difference	Series Circuit	Parallel Circuit

Connection	Components are connected in a single line (one after the other).	Components are connected same position to each other.

Circuit Breakage	If one circuit fails, the entire circuit will stop working.	If one circuit fails, the other is not affected.

Total Resistance	Total Resistance is directly proportional. If we add new resistor in our circuit, then total resistance should be increases and vice versa.	Total Resistance is inversely proportional. If we add new resistor in our circuit, then total resistance should be decreases and vice versa.

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Series Circuit. I calculate the Total Resistance as shown in above

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Parallel Circuit

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Take two pieces of wire and connect them properly. Be sure to mention consistent images and clear descriptions?

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Step 1

Now I have started doing my practical work. According to the instructor's instructions, I needed three things. Including...

• Wire
• Knife
• Combination Plier

Step 2

Then I removed the wire insulation with a knife. I kept the knife between 30 and 60 degrees. It was easily removed and the wire was not damaged.

Step 3

I very carefully removed the insulation from both wires from all around as you can see in this picture.

Step 4

Then I started connecting the two wires. It was a new task for me but turned out to be very interesting.

I put both of them at 90 degrees and connected them opposite each other. Which you can see in my picture.

Finally

Believe me, I'm very happy to see my task.

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After completing this lesson write what you learn in your own words?

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• Let me tell you that I am a Law student and I didn't know anything about series and parallel circuits. But Alhamdulillah I read about series and parallel circuit in this course and learned many good things and I researched it.

• I got to learn a lot in the series circuit. For example, now we place four to five bulbs in a series. If one bulb stops working, the entire circuit breaks.

• Similarly, if you put four to five bulbs in a parallel circuit, So even if one gets fails, the others continue their work. So you have explained the series and pearl combination very well.

• Cable joint This was also new thing for me. Let me tell you what I liked the most was the cable joint. As I didn't know about the cable joint at all. Whenever there was a problem with a cable joint in our house, we used to call an electrician.

• But Alhamdulillah, I was able to do that if any such work comes in the future, God willing, I will definitely be able to do it. And you explained to us very well with very easy steps. And I am very happy to know. May Allah bless you always.

All pictures are taken by me, @hamidrizwan / Pakistan.