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

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: thukon on June 11, 2009, 03:28:55 am

Title: Phys P1 Discussion!!
Post by: thukon on June 11, 2009, 03:28:55 am: well, about 23 hours are up, but I doubt anyone is hawaii is doing IGs.
Title: Re: Phys P1 Discussion!!
Post by: thukon on June 11, 2009, 05:41:15 am: Anybody????
Title: Re: Phys P1 Discussion!!
Post by: solo_G on June 11, 2009, 05:55:51 am: r we allowed 2 start discussin now?? :-\
Title: Re: Phys P1 Discussion!!
Post by: mr_scholes on June 11, 2009, 05:56:59 am: what do u want to know

i know that i got the mm question wrong, the one with the metre ruler

By the way what was the answer for the fuse question
Title: Re: Phys P1 Discussion!!
Post by: solo_G on June 11, 2009, 05:57:58 am: Quote from: mr_scholes on June 11, 2009, 05:56:59 am
what do u want to know

i know that i got the mm question wrong, the one with the metre ruler

By the way what was the answer for the fuse question
which 1 da 1 wed da circut breaker or da 1 abt da lamp??
Title: Re: Phys P1 Discussion!!
Post by: mr_scholes on June 11, 2009, 06:09:35 am: both :D
Title: Re: Phys P1 Discussion!!
Post by: ADIN on June 11, 2009, 06:23:36 am: circuit breaker one was A and the fuse one was B
Title: Re: Phys P1 Discussion!!
Post by: cashem'up on June 11, 2009, 06:29:35 am: hey man circuit breaker was X n X i agree....but i think fuse should be 0.2 A because 0.25 is full brightness and lamp ratings are of norm brightness so then wouldnt fuse have to be 0.2A ... i mean ne higher than full brightness means the lamp blows up rite so then 1A is 4 times that value....someone reply
Title: Re: Phys P1 Discussion!!
Post by: Christy on June 11, 2009, 06:40:43 am: well i thought tht ... but then it wouldnt give it a full brightness .... so i chose 1A .... it may burn it well i dont no :S ???
Title: Re: Phys P1 Discussion!!
Post by: spamboy on June 11, 2009, 06:44:35 am: i put the fuse as 1 amp... ;D ;D
Title: Re: Phys P1 Discussion!!
Post by: mr_scholes on June 11, 2009, 06:46:24 am: Quote from: ima_shah2002 on June 11, 2009, 06:29:35 am
hey man circuit breaker was X n X i agree....but i think fuse should be 0.2 A because 0.25 is full brightness and lamp ratings are of norm brightness so then wouldnt fuse have to be 0.2A ... i mean ne higher than full brightness means the lamp blows up rite so then 1A is 4 times that value....someone reply

lool if u used a 0.2a fuse, then it will melt before the lamp will work (in its full brightness)
for the circuit breaker, it has to be on the live wire along with the fuse
Title: Re: Phys P1 Discussion!!
Post by: spamboy on June 11, 2009, 06:48:29 am: Quote from: mr_scholes on June 11, 2009, 06:46:24 am
Quote from: ima_shah2002 on June 11, 2009, 06:29:35 am
hey man circuit breaker was X n X i agree....but i think fuse should be 0.2 A because 0.25 is full brightness and lamp ratings are of norm brightness so then wouldnt fuse have to be 0.2A ... i mean ne higher than full brightness means the lamp blows up rite so then 1A is 4 times that value....someone reply

lool if u used a 0.2a fuse, then it will melt before the lamp will work (in its full brightness)
for the circuit breaker, it has to be on the live wire along with the fuse

agreed...i completely agree wid u....
if its a .2 amp fuse,, the fuse would break too easily and frequently...it would be pointless
Title: Re: Phys P1 Discussion!!
Post by: XaM!! on June 11, 2009, 08:37:16 am: wat ws da ans of 1?
Title: Re: Phys P1 Discussion!!
Post by: Priceless on June 11, 2009, 08:45:08 am: 50 km/hr...as i remb :)