Biology; Chemistry; Physics: Post your doubts here!

[exploded diper]

i am not confused bro...
i knew that this was an o-level thread before..

ugh ... will u ever understand my posts..
what i meant was that my previous previous post wasn't so confusing right...

 

[funky brat]

I beg to ask how can 3 wires be connected to one lamp

Lol, okay. I got that.
Thanks.

 

[funky brat]

View attachment 40096 wt abt thx

My new version according to the paper's placement of components:

here
View attachment 40095

Lol, everybody thanks.

 

[Karim Nabil]

ugh ... will u ever understand my posts..
what i meant was that my previous previous post wasn't so confusing right...

ok

 

[exploded diper]

Lol, everybody thanks.

i also tried.........

 

[funky brat]

i also tried.........

Ops sorry. Thanks a lot.

 

[funky brat]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_w06_qp_1.pdf
Why is the answer to 36 C and not D?

 

[Dark Destination]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_w06_qp_1.pdf
Why is the answer to 36 C and not D?

Don't the electrons return to the battery?

 

[funky brat]

Don't the electrons return to the battery?

If they return how would the charge be stored? There is a non conducting material between the two plates.

 

[Dark Destination]

If they return how would the charge be stored? There is a non conducting material between the two plates.

Uhm, well idk. C seems more appropriate.
And i don't think a capacitor is actually like that. That's just the symbol. Actually, it conducts electricity.

 

[funky brat]

Uhm, well idk. C seems more appropriate.
And i don't think a capacitor is actually like that. That's just the symbol. Actually, it conducts electricity.

What?
All capacitors charge first and then discharge. How can this be possible?

 

[Dark Destination]

What?
All capacitors charge first and then discharge. How can this be possible?

Electrons carry energy right? That energy is provided by battery, i think.
In a normal bulb, the energy is converted into heat or light when the electrons pass through it. Electrons are just carriers of energy.
But in a capacitor, it is stored. And the electrons move on back to the battery.

Are capacitors included in the book? :/

 

[funky brat]

Electrons carry energy right? That energy is provided by battery, i think.
In a normal bulb, the energy is converted into heat or light when the electrons pass through it. Electrons are just carriers of energy.
But in a capacitor, it is stored. And the electrons move on back to the battery.

Are capacitors included in the book? :/

They are in the syllabus. Idk about the book.
But I read somewhere that capacitors store charge, not just the energy. If the current flows as in a normal circuit, then how would the charge be stored? This is so confusing.

 

[robinhoodmustafa]

If they return how would the charge be stored? There is a non conducting material between the two plates.

Assume Y has a Voltage of 200 V so From Y the electrons flow to plate 2 .ok? that you can undertstand but the Plate 1 will have 0 voltage against it so it will attract the electron toward itself i.e point X

 

[Dark Destination]

They are in the syllabus. Idk about the book.
But I read somewhere that capacitors store charge, not just the energy. If the current flows as in a normal circuit, then how would the charge be stored? This is so confusing.

Physics is confusing.

Option C is illogical, though. The electrons have to return to the battery, no matter what.

 

[asadalam]

What?
All capacitors charge first and then discharge. How can this be possible?

Electron flow is opposite to flow of conventional current.Therefore they will move to plate 2.Here they will accumulate and then will be slowly discharged when the charge is large enough like in the case of lightening.Then they will return to the battery.My opinion.

 

[Awesome12]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_w06_qp_1.pdf
Why is the answer to 36 C and not D?

Its simple. Relate it to the flow of current in a circuit. Current will flow from X to plate 1, and then from plate 2 to Y
Direction of the flow of electrons in opposite to the flow of current

 

[asadalam]

Physics is confusing.

Option C is illogical, though. The electrons have to return to the battery, no matter what.

Dont you mean D?

 

[Dark Destination]

Dont you mean D?

Oh yeah, D is illogical.

 

[funky brat]

Assume Y has a Voltage of 200 V so From Y the electrons flow to plate 2 .ok? that you can undertstand but the Plate 1 will have 0 voltage against it so it will attract the electron toward itself i.e point X

But if it attracts the electrons the electrons will flow back to the positive terminal of the battery. Then how would the charge be stored?