Unit 4 Physics Edexcel A2 and Edexcel IAL

All discussion and revision here please.
Best site for resources is probably
www,physicsandmathstutor.com

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Reply 1

Fox Corner

Thanks for making this thread OP! I've added it to the Exam Directory Thread which you can find here. Use that thread to find discussions on your other exam papers, and do let me know if you spot any that aren't on the list. Good luck with this exam! :king1:

Reply 2

Agarshanan

guys please help me with this question :frown:

june 2011.jpg52.8KB

Reply 3

username1162972

Original post by Agarshanan

guys please help me with this question :frown:

Coil X has a field which is also acting on Coil Y with the same magnirude. So it would be 0.002x50x4.

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Reply 4

username1162972

I have a problem, some explanation is needed for me.
ImageUploadedByStudent Room1461966378.558279.jpg

Q4.

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Reply 5

Zacken

Original post by physicsmaths

I have a problem, some explanation is needed for me.
ImageUploadedByStudent Room1461966378.558279.jpg

Q4.

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Perhaps use the exponential definitions?

So V = V_0 e^(-t/RC)

Reply 6

username1162972

Original post by Zacken

Perhaps use the exponential definitions?

So V = V_0 e^(-t/RC)

Then ...?
I can't show a clear method. Would I say the time is less to charge from 6V to 12V hence larger then the bottom?

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Reply 7

Zacken

Original post by physicsmaths

Then ...?
I can't show a clear method. Would I say the time is less to charge from 6V to 12V hence larger then the bottom?

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Yeh, that's what I'd do, the e^(-) term makes the time from 6 to 12 go slower than 0 to 6

Reply 8

username1162972

Original post by Zacken

Yeh, that's what I'd do, the e^(-) term makes the time from 6 to 12 go slower than 0 to 6

Yehh yeh.
In the real exam I used these definitions in a show that where everyone else used proportionality including the MS my alternative was not in the MS but it got 2/3 marks lost a mark cause i wrote the wrong conclusion (wtf is wrong with me). Anyway interesting question when you get to it in the UK 2015 U4 paper!
Cheers btw, needed some insight.
Aint it like 5am in ur endz

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Reply 9

XxKingSniprxX

Original post by physicsmaths

All discussion and revision here please.
Best site for resources is probably
www,physicsandmathstutor.com

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what do you recommend if I've exhausted every single unit 4 + unit 5 edexcel regular past papers + IAL past papers that are available?

Should I do the more recent papers over again or?

(edited 7 years ago)

Reply 10

AvWOW

Original post by physicsmaths

I have a problem, some explanation is needed for me.
ImageUploadedByStudent Room1461966378.558279.jpg

Q4.

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So what IS the answer for that? :0 (subscribing to the thread)

Reply 11

username1162972

Original post by AvWOW

So what IS the answer for that? :0 (subscribing to the thread)

It is B i think

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Reply 12

Agarshanan

Original post by physicsmaths

Coil X has a field which is also acting on Coil Y with the same magnirude. So it would be 0.002x50x4.

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Thank you so much :smile:

Reply 13

AvWOW

Hey guys!
Having a little issue here, but I don't know how you'll be able to help me :frown:

So there are a lot of questions on projectile motion equations, especially for particles in electric fields and stuff... and i have kind of lost touch of the use of these equations.
Can someone give me a summary of the stuff? Like those calculating max height, then time taken and range etc.
Also where should you use the equation : s= (u+v)t/2?
Thanks for any assistance in any way :smile:

Reply 14

O$car

I'm out of papers to do HELP

Reply 15

AvWOW

Original post by O$car

I'm out of papers to do HELP

well... study the papers then.
Also check the examiner reports. really helpful

Reply 16

XxKingSniprxX

Original post by O$car

I'm out of papers to do HELP

welcome to my world! :jumphug:

Reply 17

O$car

Original post by AvWOW

well... study the papers then.
Also check the examiner reports. really helpful

haha i do that when i mark my papers, i might consider doing all of em for a second time. Though I could use the time to study my M1 or S1 xd

Reply 18

Agarshanan

any phy unit 6 thread? or notes

Reply 19

Maetras

Hi, I have two questions. For the first picture how do you know which way the current is flowing? And for the second picture why is the answer B? Thanks in advance.