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Author Topic: Physics P3 27/5/2010  (Read 20859 times)

Offline Vin

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Re: Physics P3 27/5/2010
« Reply #30 on: May 21, 2010, 03:09:14 am »
Quote from: the golden girl on May 20, 2010, 06:47:16 pm

ahhh i so luv ur pic  :-[  lol  :P

haha thanks ! :D ;D
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Offline guMnam

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Re: Physics P3 27/5/2010
« Reply #31 on: May 21, 2010, 07:36:10 am »
guys can someone explain the working of bridge rectifier  Thanks in advance :D
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Offline WARRIOR

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Re: Physics P3 27/5/2010
« Reply #32 on: May 21, 2010, 07:40:53 am »
Quote from: gumnam on May 21, 2010, 07:36:10 am
guys can someone explain the working of bridge rectifier  Thanks in advance :D
well i think all you need to know for IGCSE is Diode( i think )  ..

Open May/june 2005 question 9

Diode is the same a rectifier..it change A.C TO D.C ..makes current flow in 1 direction .

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Offline Vin

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Re: Physics P3 27/5/2010
« Reply #33 on: May 21, 2010, 07:48:59 am »
I had seen diode bridge in some paper .. lemme check ..

got it .. june 2009 paper 3 .. attached .. Q.9 b)

try to solve it .. ask if any ques.
« Last Edit: May 21, 2010, 07:53:20 am by ~VIN1094~ »
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Offline WARRIOR

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Re: Physics P3 27/5/2010
« Reply #34 on: May 21, 2010, 07:51:06 am »
Quote from: ~VIN1094~ on May 21, 2010, 07:48:59 am
I had seen diode bridge in some paper .. lemme check ..
its on of the 2009s
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Offline WARRIOR

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Re: Physics P3 27/5/2010
« Reply #35 on: May 21, 2010, 07:52:29 am »
paper 3 june 2009  question 9 ( 2nd variant(

if u kno whats i diode you can just follow and aswer the questions really
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Offline gaurav95

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Re: Physics P3 27/5/2010
« Reply #36 on: May 21, 2010, 01:19:47 pm »
Are the notes over???????????
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Offline WARRIOR

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Re: Physics P3 27/5/2010
« Reply #37 on: May 21, 2010, 01:53:53 pm »
Quote from: gaurav95 on May 21, 2010, 01:19:47 pm
Are the notes over???????????

nope just did 2 topics out of 5..gonna complete wht i can!
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Offline contraentry

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Re: Physics P3 27/5/2010
« Reply #38 on: May 21, 2010, 02:10:05 pm »
Hey! THANK YOU SOO MUCH FOR THE NOTES!!! THEY ARE REALLY HELPFUL! :)
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Offline The Golden Girl =D

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Re: Physics P3 27/5/2010
« Reply #39 on: May 21, 2010, 02:11:24 pm »
Quote from: contraentry on May 21, 2010, 02:10:05 pm
Hey! THANK YOU SOO MUCH FOR THE NOTES!!! THEY ARE REALLY HELPFUL! :)

i really wanna kno what does ur pic say can u plz tell me or at least upload it in ur signature  ::)
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Offline J.Darren

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Re: Physics P3 27/5/2010
« Reply #40 on: May 21, 2010, 04:18:59 pm »
Quote from: ~VIN1094~ on May 21, 2010, 07:48:59 am
I had seen diode bridge in some paper .. lemme check ..

got it .. june 2009 paper 3 .. attached .. Q.9 b)

try to solve it .. ask if any ques.
Half-wave rectification will occur.

http://upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Halfwave.rectifier.en.png/500px-Halfwave.rectifier.en.png
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Offline J.Darren

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Re: Physics P3 27/5/2010
« Reply #41 on: May 21, 2010, 05:49:46 pm »
Quote from: Raed on May 20, 2010, 06:58:45 pm
well the questions which i think will come in p3 is........
1.it will be  related to the tube and the string and the unwinding process or somethink like that.
2. i think it will be related to the resisters.. paralled and series.
1. Unwinding process ??? Elaboration please  ;D
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Offline WARRIOR

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Re: Physics P3 27/5/2010
« Reply #42 on: May 21, 2010, 05:51:24 pm »
THERMAL + ATOMIC PHYSCS DONE AND 3/4 OF ELECTRICTY


SO 1/4 OF ELCT LEFT + GENERAL PHYS AND WAVES :) I CAN MAKE IT !
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Offline Ivo

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Re: Physics P3 27/5/2010
« Reply #43 on: May 21, 2010, 05:52:02 pm »
Quote from: J.Darren on May 21, 2010, 05:49:46 pm
1. Unwinding process ??? Elaboration please  ;D

I think he/she means for finding circ. of test-tube, you wind a piece of string 10 times, then divide it by 10 to find circ.
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Offline J.Darren

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Re: Physics P3 27/5/2010
« Reply #44 on: May 21, 2010, 06:08:16 pm »
Quote from: Ivo on May 21, 2010, 05:52:02 pm
I think he/she means for finding circ. of test-tube, you wind a piece of string 10 times, then divide it by 10 to find circ.
:O Hooke's Law ?
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