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# AQA Physics PHYA4 - 20th June 2016 [Exam Discussion Thread] Watch

1. (Original post by NVismvlol)
What I can remember---

What is the angular speed of a car wheel of a diameter 0.400m when the speed of the car is 108kmh^-1
What is the height of a geostationary satellite above Earth?
What are the maximum and minimum tensions in the string when performing circular motion? (I don't know the values)
What is the resultant electric field strength at P? (Centre of the square)
Which statement in the following is correct? (simple harmonic motion graph) - acceleration and displacement are in anti phase
What is the main reason high voltages are used in electric power transmission?
What is the emf induced due to the car's moving tyres? (can't remember the values, it was just Blv though)
In an elastic collision, what is conserved? Mass, kinetic energy, momentum and total energy are listed as potential options
There is a positive charge +Q, when a test charge is moved further away from this charge what happens? Does the potential stay the same, increase, decrease, etc..
What was the e.m.f. one?

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2. (Original post by Yo12345)
What was the e.m.f. one?

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I can't remember the value, you were given speed, length and flux density so you just had to use Blv
3. (Original post by splashywill)
Unit 4 Physics
A* A B
2015 54 49 45
2014 61 53 48
2013 57 53 47
2012 56 50 44
2011 54 48 42

I'd say this paper was averagely difficult.
maybe A* 57 A 52 B 45/6 ?
This paper was significantly easier than last year though. The only genuinely challenging question was the equation proof. The others could all be done provided your read the questions properly and thought a bit. And the 6 mark question had come up in an isa before. I think an A* will be around 60 unfortunately
4. (Original post by AQATrolledMe)
Guyz i was just wondering are you suppose to tick the answer of multiple choice question on a pink sheet?
You should have read the instructions on the back. You filled in the circle of your selected response to each question.
5. Oh also "What is the force exerted on the current-carrying wire" and it was like 0.075N vertically upwards... someone should make a thread with these questions.
6. (Original post by marioman)
You should have read the instructions on the back. You filled in the circle of your selected response to each question.
Ermm buddy I kinda circled the answers in the multiple choice question booklet am i screwed?
7. 3.6x10^?V something?

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8. On the MC put crosses for probably the first 10 answers before realising that you had to put circles in. so I filled in over the crosses and put an extra ring around the answer. Is that ok?
9. (Original post by AQATrolledMe)
Ermm buddy I kinda circled the answers in the multiple choice question booklet am i screwed?
What did you think the sheet was for? I have no idea whether the booklets are even sent off with the written papers to be marked, possibly worth checking with your exams officer ASAP?
10. (Original post by AQATrolledMe)
Ermm buddy I kinda circled the answers in the multiple choice question booklet am i screwed?
gg
I remember a very similar question with +Q, +Q, +Q and -Q from June 10 but this one had all +Q, so was zero (all cancelled).

How many more exams have you got left? C3 tomorrow, CHEM5 Weds, C4/S4 clas Friday, FP2 Monday, PHYA5 (with astro) Tuesday.

Crikey, scary thoughts!!
I remember seeing zero yesterday whilst going over my papers
Got CHEM5 Wed, fp2 Friday, M2 Monday PHYA5 Tuesday gl
12. (Original post by AQATrolledMe)
Ermm buddy I kinda circled the answers in the multiple choice question booklet am i screwed?
They probably get a lot of this, it'll most likely just have to be marked by hand.
I dont think AQA are that mean.

13. How many marks out of 3 would I get for this? Got the correct values of g on the y-axis and the shape on the pic.

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14. (Original post by Nikhilm)
Hey, for the mc X to Y or Y to X thing, which direction did you work out it as?
X to Y, as X was more positive and so a positive test charge would move from X to Y
15. (Original post by AQATrolledMe)
Ermm buddy I kinda circled the answers in the multiple choice question booklet am i screwed?
I nearly did the same, I wasn't aware of the instructions on the back, and on the front it said for invigilators use. In the last few mins I realized you were suppose to use the answer form and I quickly filled em in xD
16. Hi guys, hope your exam went well. The 6 marker was wonderful, I felt so good when I saw it after doing the SHM ISA. Was almost there with the Ek proof but screwed up the gravitational graph. MHC questions were ok.
17. (Original post by spmenz123)
I got C^2kg-2 for the ε0G unit
Do you remember if that was A or B?
18. I have the multiple choice paper: I'll post the answers on here in a bit

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19. What did people get for the q with the right angle triangle I put 3F to do with gravity?????
20. (Original post by Yo12345)

How many marks out of 3 would I get for this? Got the correct values of g on the y-axis and the shape on the pic.

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probably 1...
1 mark for showing the line touches 0 (you got this one i think)
1 mark for correct values of g for venus and earth
1 mark for shape

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