IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: yasser37 on May 11, 2009, 01:22:57 pm

Title: Physics paper 6 question urgent before yesterdy
Post by: yasser37 on May 11, 2009, 01:22:57 pm

Hi All


Guys

I lost the year of the question but I still remember it


It was asking about how to reduce heating loss in a circuit


how do we do that?


Thanks

Title: Re: Physics paper 6 question urgent before yesterdy
Post by: yasser37 on May 11, 2009, 01:31:15 pm

one more thing


can someone explain to me the answer in p6

O/N 02 q 5 a II

Title: Re: Physics paper 6 question urgent before yesterdy
Post by: IGfab4 on May 11, 2009, 02:15:51 pm

Hello Yasser!!

We reduce the heat loss in a circuit by:
1) lowering current
2) increasing R of variable resistor
3) adding another lamp
4) lowering voltage

and in the other one - use m (magnification) to get the values for the base(2 x m) and the height (1.5 x m). draw an inverted triangle and start from 2 cm and draw a line let and right. that 2 cm marks the centre of the base which will help you to draw the 3rd point using the height (1.5 x m)  :)

Study well!! Don't panic!!  ;)

Title: Re: Physics paper 6 question urgent before yesterdy
Post by: The1Fear on May 11, 2009, 02:17:02 pm

Quote from: yasser37 on May 11, 2009, 01:22:57 pm

Hi All


Guys

I lost the year of the question but I still remember it


It was asking about how to reduce heating loss in a circuit


how do we do that?


Thanks

switch off between reading i guess.....

Title: Re: Physics paper 6 question urgent before yesterdy
Post by: yasser37 on May 11, 2009, 02:21:57 pm

Thanks Alot guys especially IGfab4

Useful info