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# AQA Physics Unit 1 PHYA1 20th May 2013 Watch

1. (Original post by v1k2a3t4)
I swear the question said that there were 8 vertical divisions . So if 1 complete cycle was 10ms, 2 complete cycles would be 20ms, 20/8= 2.5ms per division?
This is what I put. I thought the wording was really ambiguous, to me, 8 vertical divisions means 8 columns and 10 horizontal means 10 rows. This seems to be the wrong way round according to most people.

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2. (Original post by StalkeR47)
you will still not get a mark. Wrong is wrong and correct is correct.
If a high enough proportion of candidates interpret it in the same, albeit wrong way, then surely they should realise the wording is unclear and award marks on the basis that the concept is correct.

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3. (Original post by Felix Ivers)
This is what I put. I thought the wording was really ambiguous, to me, 8 vertical divisions means 8 columns and 10 horizontal means 10 rows. This seems to be the wrong way round according to most people.
Eight vertical divisions and ten horizontal divisions is like the attached image.
Attached Images

4. (Original post by Tullia)
Eight vertical divisions and ten horizontal divisions is like the attached image.
I know that now, but the way my head interpreted '8 vertical divisions' was as 8 columns, as columns are vertical. I therefore used a grid the same as that but rotated 90 degrees.

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5. Hope I can post the same thing come August

Don't ponder too much on what has passed. Look to the future
6. reading through this is amazing, i literally blanked the whole exam out of my head as soon as i left my exam room!

I hope everyone gets what they hope for, (fingers are crossed for a B from me )
7. (Original post by GeneralOJB)
I couldn't find a thread about this exam. Not many people are doing it, but some colleges do Unit 2 first in Jan.

Any preparation tips?
Are u coming step prep?

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8. (Original post by ArcRaman)
Are u coming step prep?

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Who? What? Where?
9. http://www.thestudentroom.co.uk/showthread.php?t=2357624 - an unofficial markscheme.
10. (Original post by GeneralOJB)
Who? What? Where?
Cambridge

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11. (Original post by minibren)
On the circuit question with multiple parts if I got the first question wrong and continued to use this value throughout the question will I lose just the one mark for that question and then get error carried forward or lose marks for every question (about 10).

Just a bit worried this could of lost me an A
Don't worry. I'm in the same situation. I have been on the AQA website, it allows error carried forward. You will lose the mark on that question, but as long as your method is good for the rest of it, you will get the marks.
12. i was wondering for the emf question if i used the lost volts for the pd across the resistor instead of emf-lost volts and used it for all of the question would it mean i would get no marks for any of it?
13. (Original post by livsmcc1)
i was wondering for the emf question if i used the lost volts for the pd across the resistor instead of emf-lost volts and used it for all of the question would it mean i would get no marks for any of it?
I made the exact same mistake as you, I think the question was badly worded.

Normally you will get marks for the rest of the questions due to ECF (error carried forward being used), so you should only really lose one mark for calculating the PD wrong.

also btw someone already gave an answer to this in the above post.
14. (Original post by minibren)
I made the exact same mistake as you, I think the question was badly worded.

Normally you will get marks for the rest of the questions due to ECF (error carried forward being used), so you should only really lose one mark for calculating the PD wrong.

also btw someone already gave an answer to this in the above post.
I did the first part right and got 6.3v but then put 6.3v for the second as well and used that value for the rest of the questions. Would it still be ecf? i tried to find a similar question from past papers but didn't have much luck
15. (Original post by livsmcc1)
I did the first part right and got 6.3v but then put 6.3v for the second as well and used that value for the rest of the questions. Would it still be ecf? i tried to find a similar question from past papers but didn't have much luck
The first question was calculating the PD of the internal resistance (which was 5.7V (a show that question)).

For the 2nd question I believe you then had to minus this from the EMF of the battery which was 12V to get 6.3V? (this is the part I just wrote 5.7 again).

If this is what you did I believe that you should still get ecf marks.
16. (Original post by ArcRaman)
Cambridge

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No, I applied but didn't meet the eligibility criteria.
17. 6 marker was the best I've ever done
18. Hi there guys you know for the 6 marker I said that hadrons feel the "strong nuclear force " and leptons don't will I still get the mark?.. And for the specific charge question did any one get 4.0 x 10^7? Also wht do you think 52/53 would get you? Mark wise
19. (Original post by Micheal123456)
Hi there guys you know for the 6 marker I said that hadrons feel the "strong nuclear force " and leptons don't will I still get the mark?.. And for the specific charge question did any one get 4.0 x 10^7? Also wht do you think 52/53 would get you? Mark wise
Yes you will get the mark for the first point. I did get 4.0x10^7 but I think this was wrong. The answer was 4.0x10^6 but you will still get the method marks. 52/53 would be a High B.
20. (Original post by StalkeR47)
Yes you will get the mark for the first point. I did get 4.0x10^7 but I think this was wrong. The answer was 4.0x10^6 but you will still get the method marks. 52/53 would be a High B.

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