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ALL PHYSICS DOUBTS - POST HERE !!

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Vin:

--- Quote from: Snake on May 07, 2010, 07:50:47 pm ---Guys what was the transformer formula? Np/Ns=Vp/Vs=Ip/Is?

--- End quote ---

Vs/Vp  =  Ns/Np

to find the number of turns or voltage .. depending on ques ..

Is/Ip  =  Vp/Vs

to find any one if other three are given ..

also theres another  formula ..

Power (loss) = I2R

$H00t!N& $t@r:

--- Quote from: ~VIN1094~ on May 07, 2010, 07:52:18 pm ---see the thing here is, as u said they hav given the "mass" as 0.05g per second .. here i didnt literally mean it as 'mass' .. it was jus for ur understanding u kno..:)

but did u get the concept ??
 / sec cancels out in the equation ..  ;)  

--- End quote ---

ooooohhhhhh  i see what you mean. Thanks!  ;D ;)

Baladya:

--- Quote from: ~VIN1094~ on May 07, 2010, 03:07:04 pm ---

--- End quote ---

Just like i thought :)
Thanks man ;)

Malak:
Question:

06 Nov P6 (Q1 Part c) , (Q3 Part b) http://www.freeexampapers.us/IGCSE/Physics/CIE/2006%20Nov/0625_w06_qp_6.pdf
03 Nov P6 Q1 Part d http://www.freeexampapers.us/IGCSE/Physics/CIE/2003%20Nov/0625_w03_qp_6.pdf

Thx

Vin:

06 Nov P6 1. c) 7.5 (this one is just estimation .. theres no hard and fast rule or ny formula to determine the answer .. ur answer should obiv. a little less than b) ii)

              3. b) i) is attached ..
                     ii) should be base as less room for any error because safer to take as the pins might be of different sizes or not placed vertically/straight.

03 Nov P6 1 d) for this i had to take help from markscheme because i dont hav a hardcopy ..
                     same estimation part .. V= 32.41  take say 1.41 cm3 as 'missing' part
                     subtract it from V to get ii)

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