GCSE Physics - Pressure and Volume - How to use the 'PV = Constant' Equation #30

This video covers:
- The concept that pressure and volume are inversely related
- How to use the "PV = constant" equation
- Examples

General info:
- Suitable for all GCSE and IGCSE courses
- Suitable for both higher and foundation tier
- See below for whether it is triple or combined for your exam board

Exam board specific info:
AQA - Separate (triple) science only
IGCSE Edexcel - Everything is relevant to your course!
Edexcel - Separate (triple) science only
OCR 21st Century - Separate (triple) science only
OCR Gateway - Separate (triple) science only

GCSE Chemistry playlist:

GCSE Biology Playlist:

GCSE Physics Playlist:

[Cognitoedu]

If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are:
- Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown.
- Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on.
- Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like.
- A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts.
- A comprehensive bank of past exam papers, organised both by year, and also by topic.

Amadeus & Tom

[bimboodekunle]

Thank you so much. This makes so much sense, I love how you went through the examples. It really helped

[sammyflipaclip]

as a student who's suffering to understand these, thank you Sir. This greatly helped me and saved me life

[hannahfishx]

thank you so much for this, i've use your videos for my physics, biology and chemistry tests. I could finally understand the topics and gain interest in the subject of science!

[Demi]

once again, thank you so much for this video Cognito!!! it really helped me to understand the whole concept !!!! you are just a brilliant teacher and you deserve to get at least a million subscribers

[faqruddinaadil]

this man is just amazing i am trying to solve these kind of problems from yesterday night after seeing his video my all doubts are clear...
thanks bro

[imbisatfajjar]

Better teaching then my teacher ❤❤ love from Pakistan

[mikemyers]

Your videos are superb! You have no idea how much we Physics teachers appreciate you! Keep up the good work. :) S2 S2

[MidnightStorm]

Doing A level chemistry and I realized that the PV = constant is similar to the PV = nRT

[babybunny]

Thank you so much ☺️ it is really useful for when I need extra help during online class 💞

[Whynot-myfx]

I was absent the day this was explained in class but now I understand it thank you so much💗

[solarpunch]

Could you also use the equation: pressure=k/volume ?

[heroldmuashekele]

So useful for physics exam revision keep it up big ups🙏👍👍👌

[abdulqaderomeed]

There is something that confuses me, I think this only works when the variable we change is volume. If we are changing the pressure, as in a ballon, then the volume would increase instead of decreasing

[SP-sqrr]

If you left is as kPa, would that lose marks? Does it have to be converted into Pa because that's the unit for pressure?

[ZULFERISYAHPUTRA]

How to calculate pressure using oil fluid in a vertical cylinder if it is pressed 10 mm while the rod length is 200 mm, the diameter is 1.8 mm and the rod is 1 mm. Please advise and provide a solution with the formula.

[ilovesustainableenergy]

ooh could you please cover thermodynamics for mechanical engineering?

[tmlyrics]

Can you use the equation of saying the volume has decreased by x5 for example, meaning to multiple or divide when the pressure increases by that x5

[icarus]

How did you explain this better than my professor even though English is not my first language?
Anyways thank you, sir!

[MrAmmar]

can you please tell me what software are you using to show these things?