Physics Paper 1 question!

[stacetheace]

In winter 2007 paper 1, why is the answer to question #31 choice B, not C?
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w07_qp_1.pdf

 

[SherlockHolmes221B]

When a resistor is added in a SERIES, the total current/voltage decreases. In this case, there are two resistors in SERIES, this means that they will produce the least amount of current. ^__^

 

[stacetheace]

When a resistor is added in a SERIES, the total current/voltage decreases. In this case, there are two resistors in SERIES, this means that they will produce the least amount of current. ^__^

Ahh yeah.... I just tried with the formula R = V/I
for example 6Ω = 18V/I, I = 3A
but 3Ω = 18V/I, I = 6A

 

[omaaaar]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w04_qp_1.pdf
Question 25

 

[SherlockHolmes221B]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_w04_qp_1.pdf
Question 25

The answer is definitely "A". This can be simply uncovered by looking at the compass in front of the North pole. The tip of the arrow (North) MUST be away from the North pole of the magnet because like poles repel.

 

[omaaaar]

Thanks same paper question 16 as well

 

[omaaaar]

And http://imgur.com/a/ffeKm
Question 31 from here as well

 

[Al-Anoud]

gary221 bhaii! cud u plz answer my qs. i only want ur answer....they r always right!
Qs.15.) Brownian motion is observed by looking at smoke particles through a microscope.
How do the smoke particles move in Brownian motion?
A all in the same direction
B at random
C in circles
D vibrating about fixed points

 

[gary221]

gary221 bhaii! cud u plz answer my qs. i only want ur answer....they r always right!
Qs.15.) Brownian motion is observed by looking at smoke particles through a microscope.
How do the smoke particles move in Brownian motion?
A all in the same direction
B at random
C in circles
D vibrating about fixed points

B
all credit to Nibz

 

[Al-Anoud]

B
all credit to Nibz

thankuu!! from me, all credit goes to uu my pyarri bhaii!

 

[omaaaar]

Gary 221 could you answer my question as well

 

[SherlockHolmes221B]

And http://imgur.com/a/ffeKm
Question 31 from here as well

For number 16, the answer is "B". This is because they indicated in the question that the warmness reached the liquid, which means it fell at the beginning due to expansion of flask (which feels the warmness first) and then it rose when the warmness reached the liquid due to the liquid expanding (which is what the question is asking about).
.......................
For number 31, I am not really sure of my answer, but I believe that it is "A". This is because they other ammeters are connected with resistors, which will decrease the overall current read by the resistors.

 

[gary221]

And http://imgur.com/a/ffeKm
Question 31 from here as well

is the ans A?
coz current is the same in series..but splits up in parallel according to the resistances of the branches.
so at P, the current will be max, as it has not yet split up.
same for Q, as the current from both the diff branches adds up to its max original volume.
Hope u gt it.
All credit to Nibz

 

[shk123]

is the ans A?

yep!!!!!!!!!!!!

 

[shk123]

is the ans A?
coz current is the same in series..but splits up in parallel according to the resistances of the branches.
so at P, the current will be max, as it has not yet split up.
same for Q, as the current from both the diff branches adds up to its max original volume.
Hope u gt it.
All credit to Nibz

BTW why the credit always goes to Nibz!!!!!!!jst askin

 

[gary221]

BTW why the credit always goes to Nibz!!!!!!!jst askin

he asked me to say it everytime i answer a ques...its a dare...

 

[shk123]

he asked me to say it everytime i answer a ques...its a dare...

well Congratz!!!!!!!!!!u have won the dare

 

[omaaaar]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s05_qp_1.pdf
Question 40 which says what does the symbol represent.which symbol are they referring to in the question

 

[SherlockHolmes221B]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s05_qp_1.pdf
Question 40 which says what does the symbol represent.which symbol are they referring to in the question

They mean the overall thing, as in the A and X and Z

 

[shk123]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s05_qp_1.pdf
Question 40 which says what does the symbol represent.which symbol are they referring to in the question

so Answer is C as the guy mentioned above....................