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AQA physics A Level Paper 3 14th June 2018 Unofficial Markscheme

bindz

Post your answers here and i’ll edit
1)ruler was close to 120g i think

3)n=4, order of magnitude around 10^-4 or 7

(edited 5 years ago)

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Reply 1

Lucedagoose

I found that so hard omg

ffuuuuuckkkkkkkkkkkk

pretty good apart from Q2.

13g for ruler though seemed small for me so not sure? -273.1 for absolute zero.i initially converted v to metered cube which resulted in a very negative number lol.

(edited 5 years ago)

Reply 4

tomcowell99

Did you have to connect the wires in parallel or in series? I put parallel

Reply 5

BTAnonymous

Original post by Astrainlinat

I think you’re on the wrong page

I think not

Reply 6

alexcz578

Nah the ruler was measured from 1cm so it the distance was 29cm and 49cm and the actual weight was alot bigger than 13g

Reply 7

Jcvjcvjcv

Original post by alexcz578

Nah the ruler was measured from 1cm so it the distance was 29cm and 49cm and the actual weight was alot bigger than 13g

Did the same

Reply 8

alexcz578

Did anyone get 0.059 for flux density

Reply 9

Charcoal91

values for n and A, and order of mag for A anyone? got 2 for n and 1 x 10^-3 for A but pretty sure thats a load of *******s

Reply 10

Jcvjcvjcv

Original post by alexcz578

Did anyone get 0.059 for flux density

I remember getting something 0.0

Reply 11

alexcz578

Oh I got like 5.5 for n or something

Reply 12

JoshMach65

I got 1400g for ruler but seems too heavy. 0.018T for field strength? How did people find turning points paper? I got about 0.5 for A. n I got around 3.

(edited 5 years ago)

Reply 13

Smith_jack99

ill tell ya what i remember

field was going into the paper
i connected the wires in parallel so they would both get half the curent
0.0181 for the flux density
plot a graph of f against i squared and the gradeint was kl over d or something
i thnk it was 127g for the ruler, around there. i used moments
For absolute zero i remeber getting 267 or 266, guessing people will get diferent coz of different gradients
For the axn one i got 10to the -7 for the order and 3.91 for n
cant really remember much else, is there a different thread for engineering??

Reply 14

noajaho11

did anyone else get 4 exactly for n?

Reply 15

ojgnfgnofdgonf

Original post by noajaho11

did anyone else get 4 exactly for n?

I did

Reply 16

Jcvjcvjcv

Original post by JoshMach65

I got 1400g for ruler but seems too heavy. 0.018T for field strength? How did people find turning points paper? I got about 0.5 for A. n I got around 3.

I got 0.018

Reply 17

bindz

Original post by noajaho11

did anyone else get 4 exactly for n?

Most of the people in my class got 4 for n

Reply 18

Speersy

Original post by jaspreetb

Most of the people in my class got 4 for n

me too, i got 4

Reply 19

Saphiracal

Got ~120-130ish for ruler mass.

Assumption was all weight acts at a point at the centre of the rulers I think?

And what shape did people get for the last curve? I got -270ish for the value but my method was pretty strange :/

Original post by JoshMach65

I got 1400g for ruler but seems too heavy. 0.018T for field strength? How did people find turning points paper? I got about 0.5 for A. n I got around 3.