GCSE Physics - Plugs and Wires #22

This video covers:
- What mains supply is
- The roles and colours of the live, neutral and earth wires
- Why plugs can give you an electric shock

General info:
- Suitable for all GCSE and IGCSE courses
- Suitable for higher and foundation tiers
- Suitable for triple and combined science

Exam board specific info:
AQA - Everything is relevant to your course!
IGCSE Edexcel - Everything is relevant to your course!
Edexcel - Everything is relevant to your course!
OCR 21st Century - Everything is relevant to your course!
OCR Gateway - Everything is relevant to your course!

[Cognitoedu]

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Amadeus & Tom

[tgt]

The best thing of these videos is that they are short but contain a lot of information in a simple way so that everyone can understand

[smile-jcum]

Conclusion

Live wire:, brown, 230 volts, carries current into socket
Earth wire:, greeen + yellow 0 volts- alternative pathway for current if live wire is loose (in order to not shock us)
Neutral wire- blue - 0 volts, carries current out of socket

[Mdzzzzmahamed]

I’m late but I passed 🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉❤❤❤❤❤❤❤❤❤❤

[jameswinstanley]

Why does the neutral wire have 0V when there is still a current flowing through it?

[jking]

I re-wired my hedge strimmer plug. It didn't have an earth wire but did have a fuse.

[yasx]

On your video on alternating current and direct current the alternating current from the mains supply is 240 volts but in this video you said it was 230 volts so which one is correct?

[hongjoongswife]

So the three core cable is located inside the plug?




And if i said the connection of an appliance to the main supply requires a three core cable, is that correct?

[arafsadiq]

Nice re-use of the LHS rule hand drawings. Great video! Really appreciate it! These videos are single-handedly saving my exams

[Asuna-zrde]

thanks a lot your videoes are sososo clear and effective btw can CAIE exam board be include too pls pls pls

[tancebekie]

Wouldnt the current when it reverses direction. It moves from the neutral to the live wire is that correct

[paulaherne]

Actually most items only have two wires in the BS-1363 plug. Earthing only occurs with things like kettles, electric heaters and other items without double-insulation.

[baburlu]

So a current flows from where there's a high voltage to low voltage?

[master]

One thing I would say to improve the video is the mentioning of the fuse and the purpose of it. So as you discuss the earth wire and how it provides an alternative option for current to flow, the 0V of the earth wire causes a large current and therefore heating which melts the fuse and breaks the circuit
Good Video anyways!

[jeannedarc]

2:12
But what if that happens with the earth wire too :/

[abubakarkhan]

my teacher said to watch it i dont understanc a word

[QwertyUiop-ctdr]

y is the alternating current 240 volts in the last vid and 230 volts in this vid??? which one is it??

[hackuloexpi]

This may sound like a dumb question, but i was wondering if touching the neutral wire is dangerous as it has 0 volts?

[jessicawatson]

okay so in science in lesson for chemistry we wired plugs and we learn about fuses and got told that if it didn't work the fuse blew up and stopped it working and that has happened to my hair dryer before but i turned it off again and turned it back on and it was as good as new and is the earth wire dangerous even if it has 0 volts going through it or is completely safe?anyone answer