wat was the answer to that beaker question with the wires in it?? (1 Viewer)

[dnt stop runnin]

wat did u put and how did u do it??

 

[dnt stop runnin]

did people just use the normal force between two wires with the current being the same at 2 amps

 

[walla]

yeah...not sure if that gave the wrong answer given that they asked for the force "on each wire"

 

[smeyo]

i think i went the total wrong way about it, did parallel current carrying conductors and since they went up and down it was replusion for both, i dont know i just gave a random idea

 

[sugaryblue]

i was confused coz it was a THREE mark question!! and I put a one mark calculation

bugger

 

[mikehunt]

yeh i just did the force between two parallel wires F=kII l/d

 

[Bannanafish]

you need equation, force, direction for 3 marks i think

 

[Jimmoi]

Use the formula F/l=(KII)d and because the currents are in different directions they will repel right hand rule made me look stoopid. I dunno about how the question was asked but that's how i interpreted it. BOS slugheads!


Jimmoi


My2Sense

 

[smeyo]

good then thats exactly what i did...

 

[Bannanafish]

heheeh it's funny doing the right hand rule in the exam hall

 

[Exeter]

the force was the same for both
i said the left wire got pushed to the left and right wire got pusehd to the right

 

[smeyo]

so in otherwords it was replusion

 

[Jimmoi]

Originally posted by Bannanafish
heheeh it's funny doing the right hand rule in the exam hall

I did it at home months back and my mum accused me of being on drugs.

Jimmoi

 

[smeyo]

lol jimmoi,

i actually didnt see anyone else in the exam room do the right hand palm rule...

 

[t-i-m-m-y]

Originally posted by Exeter
the force was the same for both
i said the left wire got pushed to the left and right wire got pusehd to the right

thats what i wrote.... as well as that it is repulsive

 

[Ragerunner]

ROFL!

I put it went clockwise!

HAHAHAHAH

>>> IDIOT RIGHT HERE <<<<

 

[dnt stop runnin]

ok sounds like everyone is on the right track....thats good then......it scared me coz it was a 3 mark question and it was so simple.......i think

 

[mikehunt]

it was damn simple... too simple

 

[destination]

the force between the wires was found using the
kII L(small l) 2E-7 X 2 X 2 X 0.75
d 0.15
i think it was 15 centimetres and 0.75 metre
that was worth one mark your working out + right formula
then one mark for getting the right answer
one mark for the direction of the force.. what happens to the wires?
they repel since they travel in opposite directions

there you go.. 3 easy marks..
the ball question was a pity.. seemed a bit farkd up..
but yeh.. who cares.. its over stabbed to death..
no more physics till maybe uni.. yuhu!!
take ccare
n gud luck with all da remaining exams
laterz

 

[Styled n Slick]

Originally posted by destination
no more physics till maybe uni.. yuhu!!
take ccare
n gud luck with all da remaining exams
laterz

Uni Physics = Death (Proportion of 1st year to 2nd year is about 30:1 after 1st week of 2nd year Physics.)