AQA: A Level Physics: Unit 4: January 2010: Section B

Worked solutions to AQA Unit 4: June 2010: Section B (Written questions)

[taboka]

could you please explain further how you got to some answers because it can be really confusing

[pkminpkmon]

These videos are so helpful, I cannot thank you enough!

[samow]

any chance you can do a video on A2 physics maths trick and tips, because some papers have tricky equation work.
And you don't understand how helpful these videos have been thank you very very much!

[AndyD]

Title is wrong but these videos are great, thanks!

[carrelaiza]

I've got one question about 4bii) If you know the power wasted is 2.7W and the efficiency is 0.90 how do you get 3.0W as the power input of the transformer? It makes no sense, surely you would 27W as 10% is wasted (2.7W)

[KilltacularZac]

I am going to fail so badly and I think I'm probably gonna have to retake the year

[carrelaiza]

If I'm honest, it doesn't help you just going though the mark scheme. To me you're just reading it and writing it down - it's what my teacher does.