EDEXCEL GCE Physics on the GO 6PH01/01 (24/05/2016) Watch

Rumpelstiltskin_
Badges: 0
Rep:
?
#1
Report Thread starter 3 years ago
#1
Official Thread
0
reply
Rumpelstiltskin_
Badges: 0
Rep:
?
#2
Report Thread starter 3 years ago
#2
Did any1 else get 7.9x10^-14 ohm metres for the resistivity on the last q?

And did any1 get 0.77 for the efficiency of the electric motor q? The current and voltage were given along with the mass and height the weight was lifted by...
1
reply
apixytm1992
Badges: 10
Rep:
?
#3
Report 3 years ago
#3
I got something like what you got for the first one... can't remember if there was efficiency question though.
0
reply
Rumpelstiltskin_
Badges: 0
Rep:
?
#4
Report Thread starter 3 years ago
#4
(Original post by apixytm)
I got something like what you got for the first one... can't remember if there was efficiency question though.
Ah pheww!

the efficiency question was one of the first ones after the multiple choice section...
0
reply
apixytm1992
Badges: 10
Rep:
?
#5
Report 3 years ago
#5
Did anyone completely finish the exam because there wasn't enough time given, had to rush the last couple of questions.
0
reply
Rumpelstiltskin_
Badges: 0
Rep:
?
#6
Report Thread starter 3 years ago
#6
(Original post by apixytm)
Did anyone completely finish the exam because there wasn't enough time given, had to rush the last couple of questions.
Yh likewise, I ran out of time towards the end...
I had to rush the last few questions
0
reply
Rumpelstiltskin_
Badges: 0
Rep:
?
#7
Report Thread starter 3 years ago
#7
Hopefully the grade boundaries will be slightly lower than normal because it was a hard exam
0
reply
apixytm1992
Badges: 10
Rep:
?
#8
Report 3 years ago
#8
(Original post by Rumpelstiltskin_)
Hopefully the grade boundaries will be slightly lower than normal because it was a hard exam
hope they will... can you estimate what mark would be which grade? I'm unsure right now
0
reply
yazopt
Badges: 0
Rep:
?
#9
Report 3 years ago
#9
(Original post by Rumpelstiltskin_)
Did any1 else get 7.9x10^-14 ohm metres for the resistivity on the last q?

And did any1 get 0.77 for the efficiency of the electric motor q? The current and voltage were given along with the mass and height the weight was lifted by...
I got same for resistivity and got 74% something for effeciency

U know powe input =IV and power output=Fv wher Fis weight
0
reply
yazopt
Badges: 0
Rep:
?
#10
Report 3 years ago
#10
What people got for Fw in moments question
0
reply
apixytm1992
Badges: 10
Rep:
?
#11
Report 3 years ago
#11
For the momentum question
I got carbon atom moves at something like 40m/s
0
reply
PhysicsGeeker
Badges: 0
Rep:
?
#12
Report 3 years ago
#12
How did everyone do the LDR question? Is the circuit going to work as intended?
:confused::confused:
0
reply
PhysicsGeeker
Badges: 0
Rep:
?
#13
Report 3 years ago
#13
(Original post by yazopt)
What people got for Fw in moments question
About 150 to 160 N.
0
reply
yazopt
Badges: 0
Rep:
?
#14
Report 3 years ago
#14
Yeah same
0
reply
apixytm1992
Badges: 10
Rep:
?
#15
Report 3 years ago
#15
(Original post by PhysicsGeeker)
How did everyone do the LDR question? Is the circuit going to work as intended?
:confused::confused:
I thought it was LED and not LDR
As much as I remember question wanted to know: How it doesn't work, why doesn't it work that way and how do you fix it.

It doesn't work because it's in the reverse bias. Resistance is infinite in that direction.
To fix. Change the polarisation of the cell in circuit OR connect the LED other way round.
0
reply
Derek12353
Badges: 0
Rep:
?
#16
Report 3 years ago
#16
um okay so who did the exam that the thread is actually for ?
0
reply
Derek12353
Badges: 0
Rep:
?
#17
Report 3 years ago
#17
as in the old spec AS exam
(Original post by Derek12353)
um okay so who did the exam that the thread is actually for ?
0
reply
Rumpelstiltskin_
Badges: 0
Rep:
?
#18
Report Thread starter 3 years ago
#18
For the question about LDR's did u have to talk about electrons being promoted to the conduction band as to why the resistance increases with increasing light intensity?

I said that basically as the electrons gain energy from light, they are promoted from the valence band to the conduction band (only conduction electrons are free to carry a charge) so there are more collisions between these and the metal atoms therefore the drift velocity is reduced and resistance increases...
0
reply
apixytm1992
Badges: 10
Rep:
?
#19
Report 3 years ago
#19
Woah wait where is LDR coming from... Dang. I think I probably misread the question in rush!

I saw a LED symbol (with arrows pointing outwards) and battery connected with opposite direction to forward direction of LED
Or we are talking about totally different question
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts

All the exam results help you need

2,586

people online now

225,530

students helped last year
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

University open days

  • Sheffield Hallam University
    Clearing open day Undergraduate
    Tue, 20 Aug '19
  • Bournemouth University
    Clearing Open Day Undergraduate
    Wed, 21 Aug '19
  • University of Dundee
    Undergraduate Open Day Undergraduate
    Mon, 26 Aug '19

Do you have grade requirements for your sixth form/college?

At least 5 GCSEs at grade 4 (32)
17.88%
At least 5 GCSEs at grade 5 (27)
15.08%
At least 5 GCSEs at grade 6 (39)
21.79%
Higher than 5 GCSEs at grade 6 (65)
36.31%
Pass in English and Maths GCSE (6)
3.35%
No particular grades needed (10)
5.59%

Watched Threads

View All