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Author Topic: ALL PHYSICS QP & MS 01 from 1993 - 2003 AVALIABLE HERE!!!! Rev. Help Links!!  (Read 31995 times)

Offline Ghost Of Highbury

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #180 on: June 09, 2009, 07:33:27 pm »
ohh...
thanks for the info

good luck brother

hope u do extremely well!!

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Offline Ghost Of Highbury

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #181 on: June 09, 2009, 07:37:12 pm »
i just checked out my book it says
" the sum of the currents in the branches of a parallel circuit equals the current entering or leaving the parallel section"

so if a branch (lamp N) is removed
the total sum will reduce

i'm not arguing
just to help you for ur physics exam..

peace.. :)
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Offline Ukhti-R

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #182 on: June 09, 2009, 07:38:09 pm »
Adii ... arent u taking ur examz next year ?   
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Offline Ghost Of Highbury

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #183 on: June 09, 2009, 07:38:25 pm »
yes i am
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Offline Priceless

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #184 on: June 09, 2009, 07:39:50 pm »
adi...just 2 correct u...da total current duznt get reduced....if a lamp is removed....da resistance decreases.....den current wud split according 2 dat

plz correct me if im wrong ;D
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Offline Ghost Of Highbury

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #185 on: June 09, 2009, 07:42:07 pm »
if the effecitve resistance decreases, the the current should increase right

inversely proportoinal??
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Offline hmh

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #186 on: June 09, 2009, 07:44:27 pm »
Quote from: Priceless on June 09, 2009, 07:39:50 pm
adi...just 2 correct u...da total current duznt get reduced....if a lamp is removed....da resistance decreases.....den current wud split according 2 dat

plz correct me if im wrong ;D

as far as my brain works... not sure if it does.. but the answer should be A.. as the current wont decrease or increase but jst go thru M only instead of M and N. so i guess you r correct priceless :)
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Offline astarmathsandphysics

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #187 on: June 09, 2009, 07:47:19 pm »
yes if the voltage is fixed
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Offline Hope

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #188 on: June 09, 2009, 07:47:58 pm »
The answer to your qn would definitely be C.

And this is because..

When you have M and N..they're connected in parallel. Lamps form resistence..Hence, their overall resistance is less than both, right?

However, when you are left with one lamp, in series with the ammeter.. The resistance is increased.

Thus, the current, is decreased..

If you analyse the circuit, you will see that this proves to be right!

Hope I helped :)
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Offline 7ooD

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #189 on: June 09, 2009, 07:48:05 pm »
yes im with hmh and if u r crazy or stupid no offense lol then im with u cuz i think it is A too
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Offline Priceless

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #190 on: June 09, 2009, 07:50:11 pm »
can anybody giv me this pastpaper cuz i dnt hv it.....i ll like 2 luk at da ques plz....thnku
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Offline 7ooD

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #191 on: June 09, 2009, 07:51:27 pm »
ok look to end this the ammeter is put where infront of the direction of current so decreasing or increasing or removing all the lamps won't affect it cuz it only measure the current from the cell
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Offline hmh

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #192 on: June 09, 2009, 07:51:40 pm »
Quote from: Priceless on June 09, 2009, 07:50:11 pm
can anybody giv me this pastpaper cuz i dnt hv it.....i ll like 2 luk at da ques plz....thnku

Its here lol.. on same topic but jst some pages bak :P
https://studentforums.biz/index.php/topic,2342.45.html
« Last Edit: June 09, 2009, 07:55:13 pm by hmh »
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Offline 7ooD

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #193 on: June 09, 2009, 07:51:58 pm »
found in page 4 and the mark scheme in page 5
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Offline Ghost Of Highbury

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Re: ALL PHYSICS QP & MS 01 from 1993 - 2001 AVALIABLE HERE!!!! Rev. Help Links!!
« Reply #194 on: June 09, 2009, 07:52:28 pm »
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