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Edexcel Unit 4: Physics on the Move 6PH04 (11th June 2015) watch

• View Poll Results: What do you think the grade boundary for an A will be?
GCE-65+
3
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GCE-60-64
28
33.33%
GCE-55-59
31
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GCE-50-54
8
9.52%
GCE-45-49
1
1.19%
GCE- Lower than 44
0
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5
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IAL-60-64
6
7.14%
IAL-55-59
2
2.38%
IAL-50-54
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IAL- Lower than 44
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1. (Original post by bbyturtlexox)
magnetic field questions will be the death of me!!!!!!!!!!
Oh hey, it's you from chem. Magnetic field Qs would be the death of me also, but that chem paper already killed me
2. (Original post by bbyturtlexox)
magnetic field questions will be the death of me!!!!!!!!!!
Capacitors is the place where i lose my marks.

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3. (Original post by ArielHaeems)
Oh hey, it's you from chem. Magnetic field Qs would be the death of me also, but that chem paper already killed me
oh hey it's you too! lmao I didn't think it was too bad but physics will most certainly kill me tomorrow
4. I have no idea how this paper will go. I'm getting mid 60s on the past papers but it all seems a bit too easy. I have a feeling the 5/6 mark 'explain' questions will be the death of me.
5. Also

-Capacitors with capacitances C1 and C2 connected in series gives 1/Ctotal = 1/C1 + 1/C2
-Capacitors with capacitances C1 and C2 connected in parallel gives Ctotal = C1 + C2

(this is the opposite to resistors)
6. To join in the death of me conversation, I won't be revived after tomorrow's exam

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Qu 17 bi?

how do they get r = mv^2 / bev
8. (Original post by Freddy-Francis)

Qu 17 bi?

how do they get r = mv^2 / bev
some body help
9. (Original post by Freddy-Francis)

Qu 17 bi?

how do they get r = mv^2 / bev
F = mv^2/r and F = Bev

so mv^2/r = Bev

rearranging, r = mv^2/Bev
10. Jan 2012, could someone explain the second question please?
11. I could use some help here.

Question 9:

I get the explanation in the mark scheme. But why doesn't the lamp flash when the switch is closed? Surely the sudden surge of current is as good as the sudden cut of current?
12. Can someone explain question 12 (d) please?
http://qualifications.pearson.com/co...e_20100128.pdf
13. (Original post by Sataris)
I could use some help here.

Question 9:

I get the explanation in the mark scheme. But why doesn't the lamp flash when the switch is closed? Surely the sudden surge of current is as good as the sudden cut of current?
Is it not because it creates the e.m.f. instantaneously so occurs for only a short period of time?
14. (Original post by george_gleed)
Is it not because it creates the e.m.f. instantaneously so occurs for only a short period of time?
But that's the same for opening the switch. That's why it only flashes.
15. (Original post by Sataris)
I could use some help here.

Question 9:

I get the explanation in the mark scheme. But why doesn't the lamp flash when the switch is closed? Surely the sudden surge of current is as good as the sudden cut of current?
When it's closed no emf is induced and only 1.5v travels through, not enough to exceed the 200v required.

Edit: but if you flicked it from open to closed it would flash the same.
16. Guys, during the anhiliation of electron and positron, do we always multiply by 2 in the calculations?
17. Do you guys think there will be a spreadsheet question?
18. (Original post by Pecyboy3)
When it's closed no emf is induced and only 1.5v travels through, not enough to exceed the 200v required.

Edit: but if you flicked it from open to closed it would flash the same.
Ah, looks like I misunderstood the wording of the question. Thanks
19. (Original post by Runner104)
Do you guys think there will be a spreadsheet question?
Possibly
20. could someone please briefly explain magnetic flux?and flux linkage? and what flux cutting is?

also when do you use the thumb rule or the left hand rule

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