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Author Topic: Physics paper 3 monday  (Read 2879 times)

Offline brazchic

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Physics paper 3 monday
« on: November 06, 2009, 08:42:44 pm »
anyone taking the paper 3 physics on monday?
are you guys prepared?
can anyone tell me if i have to know lenz law about induced magnetism?
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Offline dlehddud

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Re: Physics paper 3 monday
« Reply #1 on: November 06, 2009, 11:10:06 pm »
taking paper 3 on monday
you probably do have to know lenz's law
my teacher did stress it quite a bit
but i doubt there'll b a question asking you to define the law lol
probs jst stating wot u have to do with the magnet in the electromagnet to make the galvanometer change readings  ;D
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Offline @d!_†oX!©

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Re: Physics paper 3 monday
« Reply #2 on: November 07, 2009, 06:30:33 am »
guys even im doin paper 3 on monday...
nd i just have one advice...DO NOT LEAVE ANY PART THINKING THAT IT HASN'T EVER BEEN ASKED
cuz dt makes it more prbable for this session...
i did bio paper 3 as well last week...nd i didn't believe dt all the things dt had never come ever....did come this time...nd shocked evry1
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Offline dlehddud

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Re: Physics paper 3 monday
« Reply #3 on: November 07, 2009, 07:17:11 am »
Quote from: @d!_†oX!© on November 07, 2009, 06:30:33 am
guys even im doin paper 3 on monday...
nd i just have one advice...DO NOT LEAVE ANY PART THINKING THAT IT HASN'T EVER BEEN ASKED
cuz dt makes it more prbable for this session...
i did bio paper 3 as well last week...nd i didn't believe dt all the things dt had never come ever....did come this time...nd shocked evry1

i so agree.. i was very shocked at this session's bio ppr3..

and just to let you know guys, i found a really good alternative to the combined resistance of parallel components formula in my textbook!!


original --> 1/R=1/R1+1/R2+...+1/Rn

newly found--> R= R1*R2*...*Rn/R1+R2+...+Rn !!!

it works just as fine!!  :D :D :D
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Offline Ghost Of Highbury

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Re: Physics paper 3 monday
« Reply #4 on: November 07, 2009, 07:19:21 am »
Quote from: dlehddud on November 07, 2009, 07:17:11 am
i so agree.. i was very shocked at this session's bio ppr3..

and just to let you know guys, i found a really good alternative to the combined resistance of parallel components formula in my textbook!!


original --> 1/R=1/R1+1/R2+...+1/Rn

newly found--> R= R1*R2*...*Rn/R1+R2+...+Rn !!!

it works just as fine!!  :D :D :D

i suppose it only works for R1 + R2

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Offline ~~~~shreyapril~~~~

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Re: Physics paper 3 monday
« Reply #5 on: November 07, 2009, 07:20:32 am »
1/R=1/R1+1/R2... is the formulae for paralle rit??
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Offline Ghost Of Highbury

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Re: Physics paper 3 monday
« Reply #6 on: November 07, 2009, 07:21:55 am »
Quote from: ~~~~shreycool~~~~ on November 07, 2009, 07:20:32 am
1/R=1/R1+1/R2... is the formulae for paralle rit??

thats what he said..read it again dude!
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Offline ~~~~shreyapril~~~~

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Re: Physics paper 3 monday
« Reply #7 on: November 07, 2009, 07:26:32 am »
read!!
but then wat were ya telling??
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Offline Ghost Of Highbury

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Re: Physics paper 3 monday
« Reply #8 on: November 07, 2009, 07:29:09 am »
"original --> 1/R=1/R1+1/R2+...+1/Rn

newly found--> R= R1*R2*...*Rn/R1+R2+...+Rn !!!"

this formula wont work for 1/R1 + 1/R2 + 1/R3..

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Offline ~~~~shreyapril~~~~

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Re: Physics paper 3 monday
« Reply #9 on: November 07, 2009, 07:29:55 am »
hmm..!!
getting a hang of it!!
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Offline dlehddud

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Re: Physics paper 3 monday
« Reply #10 on: November 07, 2009, 07:37:58 am »
Quote from: A@di on November 07, 2009, 07:29:09 am
"original --> 1/R=1/R1+1/R2+...+1/Rn

newly found--> R= R1*R2*...*Rn/R1+R2+...+Rn !!!"

this formula wont work for 1/R1 + 1/R2 + 1/R3..



huh ur rite lol
sorry the question i solved only had 2 resistors in it ...  :o
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Offline ~~~~shreyapril~~~~

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Re: Physics paper 3 monday
« Reply #11 on: November 07, 2009, 07:40:08 am »
u can do it like (R1+R2+R3...+Rn)/(R1*R2*R3...*Rn)!!!


why isnt this possible!!
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Offline Ghost Of Highbury

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Re: Physics paper 3 monday
« Reply #12 on: November 07, 2009, 07:46:44 am »
Quote from: ~~~~shreycool~~~~ on November 07, 2009, 07:40:08 am
u can do it like (R1+R2+R3...+Rn)/(R1*R2*R3...*Rn)!!!


why isnt this possible!!

1/R1 + 1/R2 + 1/R3 doesnt simplify to that u've posted
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Offline ~~~~shreyapril~~~~

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Re: Physics paper 3 monday
« Reply #13 on: November 07, 2009, 07:47:30 am »
ohh ya!!
when in tried it! i gt the ans!!
true!
better to use orginal formulae!!
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Offline $!$RatJumper$!$

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Re: Physics paper 3 monday
« Reply #14 on: November 07, 2009, 09:04:32 am »
guys this one is a much easier method to find the conbined resistance of a parallel circuit:

(R1*R2)/(R1+R2)
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