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Series and parallel circuits

Activity of this lesson

Stage 1

I want you to work in pairs. First of all, I want you to watch video 1. And after that, I want you to watch video 2.

Here you will find the transcriptions for both video 1 and 2 in case you don't understand any word from the videos.

Video 1 Transcription

Scene 1/3

The current is shared between the bulbs, so the more bulbs that are connected, the dimmer they are.

Scene 2/3

Each bulb gets the full battery voltage, so at junction A the current splits, but each bulb still has the same current flowing through it as just one bulb in the circuit would have. That's why the bulbs glow brightly.

Scene 3/3

In a series circuit, when a bulb is removed, the circuit is broken. In a parallel circuit, even if a bulb is removed, there is still a complete circuit.

Video 2 transcription

Scene 1/3

For an electric current to flow through conducting materials, the pathway or circuit must be complete, in other words, there should not be gaps.

Scene 2/3

Symbols are used to represent the different parts of an electric circuit. Straight lines are then drawn connecting the parts together.

Scene 3/3

For a power supply, a long line and a short line, drawn together, are used. The long line represents the positive end or terminal. The short line represents the negative terminal.

Stage 2

Now, I want you to have a look at the information in a website which is included in the Resources tab of this lesson. You will find some questions in the website. I would like you to discuss them with your partner.


Stage 3

Finally, I want you to go to the website Wiggio and find the group I created. Thus, I would like you to record audio brief theoretical explanations of series and parallel circuits and other concepts learnt in former lessons. You must use the headset I have provided you with.

Short url:   http://multidict.net/cs/4138