You are Here: Home >< Physics

# AQA Physics PHYA1 - 24 May 2016 - RESIT [Exam Discussion Thread] watch

1. (Original post by Lawliettt)
How would you get 4040? It was literally (230^2)/12=4400. And even if it was 4040, you would be wrong because you had to use 2 significant figures
Read first line, Correct add etc. That was my typing mistake
2. For the emf question I put 6 without the unit, do you reckon I will lose the mark as it only asked for the value not the units...? 🤕

Posted from TSR Mobile
3. (Original post by txnilxnur)
I agree with you here I don't understand why its 5v across the 18ohm resistor and not 1... anyone care to explain why its 5v not 1v!!

also anyone know of an unofficial mark scheme anywhere?
6.0V was your emf. When current flows through the circuit, volts are lost inside the battery due to the internal resistance. The oscilloscope acts much like a voltmeter, and when both switches were closed the oscilloscope measured the terminal pd (which obviously does not account for the volts lost inside the battery). The resistance of the external resistor was 18 ohms, and the pd across it was 5.0V (i.e. the terminal pd), hence current is worked out using V=RI so I=V/R =5/18 =0.277777... A and so on
4. (Original post by matty9)
For the conservation to find particle X I put photon, it doesn't have a charge, lepton number = 0, baryon number = 0, doesn't violate anything so would I by any chance get the mark?
But a photon isn't a particle! And it said X was a particle I'm sure
5. Guys do you think I will get any marks for working out on the power question I got 8800W
6. (Original post by dont leave blank)
For the emf question I put 6 without the unit, do you reckon I will lose the mark as it only asked for the value not the units...? 🤕

Posted from TSR Mobile
It was one mark so i imagine you will get the mark for simply stating the magnitude without the unit
7. what did everyone draw for the circuit for the 6 market question??
8. (Original post by Imtheish)
Guys do you think I will get any marks for working out on the power question I got 8800W
Maybe one mark for writing down the equation: P=V^2/R
But no other marks
9. So did I because I thought it asked for total power but everyone else has calculated average power so are we wrong?
10. (Original post by tort 779)
Maybe one mark for writing down the equation: P=V^2/R
But no other marks
Okay thanks do you remember if there was another question after that one before the 228V
11. (Original post by tort 779)
Maybe one mark for writing down the equation: P=V^2/R
But no other marks
I thought that particular question had marks for using an appropriate sfs..?

Posted from TSR Mobile
12. (Original post by tort 779)
It was one mark so i imagine you will get the mark for simply stating the magnitude without the unit
Yh..hopefully

Posted from TSR Mobile
13. (Original post by ShenanigansTVLV)
So did I because I thought it asked for total power but everyone else has calculated average power so are we wrong?
Apparently we are
14. (Original post by txnilxnur)
what did everyone draw for the circuit for the 6 market question??

I think they'd expect something like this..but forgot to do the data logger..

Posted from TSR Mobile
15. I got 651V for my peak to peak as I didn't round when calculating Vtotal? Will I still get the mark?
16. (Original post by txnilxnur)
But a photon isn't a particle! And it said X was a particle I'm sure
First line of wikipedia: "A photon is an elementary particle" so your point is invalid xD
17. In question 6 bi I thought it asked for total power and not average power so would it not be wrong to use V rms instead of the peak voltage ??

Posted from TSR Mobile
18. (Original post by Imtheish)
Apparently we are
I thought the power question was asking for the total power and not the mean power supplied so wouldn't it be 8800W? Also, are the wires in parallel or series? I was running out of time and assumed parallel so will I lose all 4 marks?
19. (Original post by Lawliettt)
For 6 I got 650V, then 4400W, then 228V (that one was a disgusting question) and for the last one i just wrote down BS
I got 651V and 4480W and then 228.2V so pretty close, fingers crossed its right.
20. (Original post by Imtheish)
Okay thanks do you remember if there was another question after that one before the 228V
Calculating peak to peak voltage, which i believe was 650V

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: May 23, 2017
Today on TSR

### The most controversial member on TSR?

Who do you think it is...

### Is confrontation required?

Discussions on TSR

• Latest
Poll
Discussions on TSR

• Latest

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE