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Author Topic: ALL PHYSICS QP & MS 01 from 1993 - 2003 AVALIABLE HERE!!!! Rev. Help Links!!  (Read 31994 times)

Offline 7ooD

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #165 on: June 09, 2009, 06:06:53 pm »
b
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Offline hmh

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #166 on: June 09, 2009, 06:08:32 pm »
Quote from: 7ood on June 09, 2009, 06:06:53 pm
b

the current starts to flow... and it goes through resistor to lamp.. but not from switch as its not complete so current to tht way is wasted... but wen switch is closed.. the current tht is wasted up going there adds too.. so now it becoomes more current.. so more current = more brightness. Hope u understand ?
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Offline Ghost Of Highbury

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #167 on: June 09, 2009, 06:09:19 pm »
i guess its this way..

the lamp becomes brighter because when the switch was closed it was off..

trivky question
will have to think
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Offline 7ooD

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #168 on: June 09, 2009, 06:12:24 pm »
omg im an idiot i should have read the Q carefully sry guys for wasting ur time i thought vice versia that the question said when the switch is closed it will be less bright lol
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Offline Ghost Of Highbury

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #169 on: June 09, 2009, 06:15:07 pm »
no probs...+rep
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Offline hmh

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #170 on: June 09, 2009, 06:15:14 pm »
Quote from: 7ood on June 09, 2009, 06:12:24 pm
omg im an idiot i should have read the Q carefully sry guys for wasting ur time i thought vice versia that the question said when the switch is closed it will be less bright lol

LOOL..its always like tht.. an EYE on the diagram while reading the questions is must lol.. anyways.. gud u got the question :)
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Offline sweetest angel

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #171 on: June 09, 2009, 06:28:16 pm »
guys nov 2000 Q16...the answer in da MS is A...bt isn't it supposd 2 b B?
plz chek  :)
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Offline Ghost Of Highbury

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #172 on: June 09, 2009, 06:33:25 pm »
i thik its A too..

the steam would cause a little expansion but this particular shape would prevent it..

pressure changes are not in the lime light as steam has to do more about expansion
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Offline angell

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #173 on: June 09, 2009, 07:00:17 pm »
its definitely A :)
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Offline hmh

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #174 on: June 09, 2009, 07:01:38 pm »
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Offline 7ooD

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #175 on: June 09, 2009, 07:16:10 pm »
dudes the mark scheme is wrong on q 26 paper 98 nov they say it is C and it should be A
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Offline Ghost Of Highbury

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #176 on: June 09, 2009, 07:21:08 pm »
n a parallel circuit the voltages across the devices are same but the current is diffferent

therfore --> I (1) + I (2) = I

when lamp N is removed there is no I (2)
soo I has to be less

it is C
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Offline 7ooD

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #177 on: June 09, 2009, 07:25:03 pm »
dude i asked an electrical engineer right now and he said it should be A because the ammeter reads the total current and if one removed the total current supplied by the battery would still be the same it is so obvious they are wrong  :-\ >:(
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Offline Ghost Of Highbury

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #178 on: June 09, 2009, 07:26:41 pm »
if one is removed the total current will be reduced right??

anyway...u r right....relax....
good luck
night
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Offline 7ooD

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #179 on: June 09, 2009, 07:31:57 pm »
no it wont be reduced
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