Physics paper 1 question

[librement]

I'm quite confused with question 33 from summer 2012 variant 2 ( http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s12_qp_12.pdf )
Can anyone explain how it's 8.0 V and not 12V?

 

[taffycandy]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s11_qp_12.pdf q 11 plzz sm1 help

 

[Wolfgangs]

Guys, I need someone to help me. About Paper 31, there was a question that involved changing amplitude and wavelength. What was the question exactly and what was its answer? Please reply soon.

 

[Othman]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s11_qp_12.pdf q 11 plzz sm1 help

A, because the wax melted and fell the most here.

I'm quite confused with question 33 from summer 2012 variant 2 ( http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s12_qp_12.pdf )
Can anyone explain how it's 8.0 V and not 12V?

V=IR, 12= I*(10+20) , I=(12/30).
V across the 10 ohm , V= (12/30) * 10 = 4V
the total voltage is 12, so 12-4=8 which is the voltage across the 2o ohm resistor.
This is a potential divider so it divides the voltage.
I hope I helped.

 

[Wolfgangs]

A, because the wax melted and fell the most here.



V=IR, 12= I*(10+20) , I=(12/30).
V across the 10 ohm , V= (12/30) * 10 = 4V
the total voltage is 12, so 12-4=8 which is the voltage across the 2o ohm resistor.
This is a potential divider so it divides the voltage.
I hope I helped.

Can you please help me with my problem?

 

[Alex10]

I'm quite confused with question 33 from summer 2012 variant 2 ( http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s12_qp_12.pdf )
Can anyone explain how it's 8.0 V and not 12V?

Just use the formula Voltage 2 = (Resistance 2/Resistance 1 + Resistance 2) x Voltage
So that would be Voltage 2 = (20/10+20) multiplied by 12 = 8V

 

[Othman]

Can you please help me with my problem?

I don't remember the question, sorry.

 

[librement]

Thank you so much!

 

[omaaaar]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s12_qp_11.pdf
Q8 how is the answer C,the upward and downward forces are equal so the handle shouldnot move
Q10 why gravitational energy ,at point Y gravitational energy will be zero
Q18 in convectiondoes the liquid expand or the molecules in the liquid will expand
Q23 could you tell about the characteristics of the image formed by a plane mirror
Q33 could you explain no idea​

 

[humdono]

what is the energy stored in a box of matches

 

[Othman]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s12_qp_11.pdf​

Q8 how is the answer C,the upward and downward forces are equal so the handle shouldnot move ​

Q10 why gravitational energy ,at point Y gravitational energy will be zero​

Q18 in convectiondoes the liquid expand or the molecules in the liquid will expand​

Q23 could you tell about the characteristics of the image formed by a plane mirror​

Q33 could you explain no idea​

q8) C, M= F*D. As the force acting ACW has more distance so 100*moredistance= more moment so the handle moves anticlockwise.

q10) no it wont be 0, the ball there will be still above ground so it will have potential energy.

q18) A, liquid expand. Simple add heat volume increases. D=M/V so density decreases which creates the conventional current.

q23) Inverted, virtual and same size.

q33) B right ? when the T is at R the voltmeter reads 0 when you move it to S it reads 12.
I have a method of solving this question but I'm not 100% sure of it, so I can't post it.

 

[Othman]

what is the energy stored in a box of matches

Chemical.

 

[humdono]

Chemical.

thanks and what is the input and output energy in a microphone

 

[Othman]

thanks and what is the input and output energy in a microphone

Sound - electrical.

 

[humdono]

in a CRO what is the suitable pd to connect the cathode and anode

 

[Othman]

in a CRO what is the suitable pd to connect the cathode and anode

what are the options ?

 

[humdono]

what are the options ?

6 v ac
6 v dc
600 v ac
600 v dc

 

[Othman]

6 v ac
6 v dc
600 v ac
600 v dc

My book says it's 6v ac, can you tell me which year this is and which question pls.

 

[humdono]

My book says it's 6v ac, can you tell me which year this is and which question pls.

m/j 10 p-11 q-37

 

[Othman]

m/j 10 p-11 q-37

I don't think you gave me the right year...