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

1. (Original post by philo-jitsu)
Ohhh so its a way to find the B at a particular point because it varies?.... I was worried I had a huge gap in knowledge lol

also is the answer by any chance 1.06*10^-3T???
Yep exactly that, I am sure you are relieved it is just specific to this question then haha

For the value of B? It is not, look again at the data you are given it is a simple substitution. (Btw that is an i in the equation in case you are making the same mistake as I did )
2. (Original post by Music With Rocks)
Yep exactly that, I am sure you are relieved it is just specific to this question then haha

For the value of B? It is not, look again at the data you are given it is a simple substitution. (Btw that is an i in the equation in case you are making the same mistake as I did )
For the value of flux linkage...which was the question...wasnt it?? Lol

And cheers...the question wordings have been my downfall so far... bloody english!!
3. I subbed in 1.5 amps to find b....then used BAN to find flux linkage?
4. (Original post by philo-jitsu)
For the value of flux linkage...which was the question...wasnt it?? Lol

And cheers...the question wordings have been my downfall so far... bloody english!!
Yeah that was the question haha, unfortunately you are a fair bit out are you using the right equation? Your units should be Wb
5. (Original post by philo-jitsu)
I subbed in 1.5 amps to find b....then used BAN to find flux linkage?
That is the correct method, numerical error?
6. (Original post by Music With Rocks)
That is the correct method, numerical error?
7.95*10^-6 ??
7. (Original post by philo-jitsu)
7.95*10^-6 ??
Correct, that is it
8. I forgot to square the 'r'....hopefully my answer is correct now!

does anyone know of a question where I use emf=BQV??

I think I finally get electromagnetism and all the flux/flux linkage stuff but I need to apply it to fully get it.

Is it used in the aeroplane travelling across a distance with a particular wingspan type questions
9. Anyone got any predictions for the 6 marker?

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10. (Original post by Questioner1234)
Anyone got any predictions for the 6 marker?

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Judging by the unit 2 resit probably trucks leaking potatoes of gradually reducing charges driving up an inclined magnet.....discuss oh and gravity wont apply
11. (Original post by philo-jitsu)
Judging by the unit 2 resit probably trucks leaking potatoes of gradually reducing charges driving up an inclined magnet.....discuss oh and gravity wont apply
Whoa what was in the unit 2 resit??

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12. (Original post by philo-jitsu)
Judging by the unit 2 resit probably trucks leaking potatoes of gradually reducing charges driving up an inclined magnet.....discuss oh and gravity wont apply
Potatoes again?
13. (Original post by Mathemagicien)
Potatoes again?
No, it was a truck traveling along a road, eventually reaching terminal velocity as it had a constant driving force, it showed a graph for it....

Then it said the same truck with the same driving force drives along the same road, but it has a leak, and water leaks constantly which constantly reduces its mass....while not the worst question, during exam stress there were many ways to **** it up.

For starters while the mass loss didnt affect the friction from air, its did affect friction due to reducing normal force from the road, so yeah there were just alot of variables lol

prepare for the worst guys honestly, as theres a new spec they can throw all there hardest questions on these...

I think my biggest mistake was going into the exam with the confidence of getting almost full ums on every past paper, then because it was harder than normal it wrecked me.
14. Do you people think that AQA will a lot of multiple choice questions?

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15. They're gonna accelerate a potato through a uniform electric and magnetic field, then ask you to find the age of the universe
16. (Original post by Nerrad)
They're gonna acceleration a potato through a uniform electric and magnetic field, then ask you to find the age of the universe
Luckily universe is unit 5....your 100% correct on everything else though :-)
17. (Original post by philo-jitsu)
Luckily universe is unit 5....your 100% correct on everything else though :-)
Universe is unit 5? huh? I'm doing turning points so i just made up the age of universe thing
18. (Original post by Nerrad)
Universe is unit 5? huh? I'm doing turning points so i just made up the age of universe thing
Well astrophysics, which is sort of universy....im doing turning points also, made the fateful error of not covering special relativity after learning it in December, way harder to self teach!
19. I've composed a set of flashcards for those who's doing Turning Points. http://www.cram.com/flashcards/phy5a-7323575
It's still in progress and my aim is to just put exam questions and the exact mark scheme in, so I can familiarise myself with the sort of framework that their answers are in.
20. (Original post by Nerrad)
I've composed a set of flashcards for those who's doing Turning Points. http://www.cram.com/flashcards/phy5a-7323575
It's still in progress and my aim is to just put exam questions and the exact mark scheme in, so I can familiarise myself with the sort of framework that their answers are in.
damn they are just what I need...I dont want to prioritise unit 5 until after next friday as Ive got loads of exams coming up, but these will keep them fresh in mind...awesome cheers dude

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