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Author Topic: IGCSE PHYSICS  (Read 23772 times)

Offline ~~~~shreyapril~~~~

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Re: IGCSE PHYSICS
« Reply #165 on: November 08, 2009, 01:39:26 pm »
hey toxic this question from which year!!
i am being too ,lazy to go back and see it!!
we can check the ms if possible!!
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Offline Ghost Of Highbury

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Re: IGCSE PHYSICS
« Reply #166 on: November 08, 2009, 01:39:52 pm »
Quote from: @d!_†oX!© on November 08, 2009, 01:38:47 pm
u know what it wuold be even better if u use the formula
n1sin1=n2sin2
instead of the above....cuz u will never go wrong wid this...
adi, dont ignore the q, wat do u think it shud be 1.5/0.4 rite?
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Offline holychalice

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Re: IGCSE PHYSICS
« Reply #167 on: November 08, 2009, 01:40:05 pm »
im not arguing ...  ;D
but i guess dat cud be d only possible reason ...
read d first part .. d wire nd lamp is connected to 4V supply ...
d lamp is marked with ... 1.5V nd 0.6W ...
nd ms says 10ohms 4/0.4 = 10
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Offline @d!_†oX!©

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Re: IGCSE PHYSICS
« Reply #168 on: November 08, 2009, 01:40:43 pm »
oh sorry i thought that question was over..will be back in 2 mins wid my ans
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Offline ~~~~shreyapril~~~~

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Re: IGCSE PHYSICS
« Reply #169 on: November 08, 2009, 01:41:09 pm »
dude!!
it is for the whole thing!!
and also in series the voltage changes!!
so i guess it must be 1.5 only!!
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nid404

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Re: IGCSE PHYSICS
« Reply #170 on: November 08, 2009, 01:43:31 pm »
i will reach home in some time.....which paper ?
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Offline @d!_†oX!©

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Re: IGCSE PHYSICS
« Reply #171 on: November 08, 2009, 01:44:15 pm »
a)
P=IV
I=P/V=0.4 A
b)
R=V/I=1.5/0.4=3.75 ohms
c)
Q=It=0.4*20=8C

all's well...what's the problem you guys are having in the question??
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Offline Ghost Of Highbury

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Re: IGCSE PHYSICS
« Reply #172 on: November 08, 2009, 01:45:38 pm »
dude, if it was that easy, we wont be arguing here, lol :P check the ms, its 4/0.4
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Offline @d!_†oX!©

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Re: IGCSE PHYSICS
« Reply #173 on: November 08, 2009, 01:46:18 pm »
u have the ms???
its not on fep..plss check nd let me know too
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Offline moon

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Re: IGCSE PHYSICS
« Reply #174 on: November 08, 2009, 01:46:45 pm »
the markscheme's answer is 10 ohms y??? ???
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Offline Ghost Of Highbury

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Re: IGCSE PHYSICS
« Reply #175 on: November 08, 2009, 01:46:56 pm »
Quote from: A@di on November 08, 2009, 01:45:38 pm
dude, if it was that easy, we wont be arguing here, lol :P check the ms, its 4/0.4

check d quoted post
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Offline ~~~~shreyapril~~~~

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Re: IGCSE PHYSICS
« Reply #176 on: November 08, 2009, 01:47:56 pm »
how come??
didnt get it>???
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Offline @d!_†oX!©

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Re: IGCSE PHYSICS
« Reply #177 on: November 08, 2009, 01:48:50 pm »
Quote from: moon on November 08, 2009, 01:46:45 pm
the markscheme's answer is 10 ohms y??? ???
how do u say that it is 10 ohms moon???????
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Offline wassup

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Re: IGCSE PHYSICS
« Reply #178 on: November 08, 2009, 01:49:28 pm »
Here is the answer direct from d mark scheme.
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nid404

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Re: IGCSE PHYSICS
« Reply #179 on: November 08, 2009, 01:49:53 pm »
which paper??
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