Physics: Post your doubts here!

[Holmes]

it said decreasing gain with increasing temperature no?

Yes you are damn right

 

[anastasia grey113]

Yes you are damn right

oh thank God i thought i was wrong

 

[Zaki ali asghar]

you put a thermistor

 

[Zaki ali asghar]

the paper had a lot of definitions, definitely easier than the past papers. how much r u guys expecting?

 

[anastasia grey113]

you put a thermistor

yh cuz with thermistor resistance idecreases as temperature increases so this means Rf will decreas so Rf/Rin + 1 will decrease so gain will decrease too

 

[haithsoul]

oh thank God i thought i was wrong

it said so hat the gain is constant so you have to change v in without changing the gain

 

[amina1300]

Someone write down the marks for all the questions I need to calculate my marks plz .I hope I get +60

 

[haithsoul]

yh cuz with thermistor resistance idecreases as temperature increases so this means Rf will decreas so Rf/Rin + 1 will decrease so gain will decrease too

screw that question i never liked amplifres

 

[anastasia grey113]

the paper had a lot of definitions, definitely easier than the past papers. how much r u guys expecting?

lol prolly high 70s or low 80s
idk wut to expect tbh
ik i lost 3 marks for sure
but idk abt the rest

 

[Zaki ali asghar]

there were 11 marks worth of just proving the answers

 

[anastasia grey113]

there 11 marks worth of just proving the answer

yh n if u just do the definitions correctly, you get a C for sure

 

[Zaki ali asghar]

this paper did well to overcome the blunders i made in chem p5 lol

 

[haithsoul]

yh n if u just do the definitions correctly, you get a C for sure

how many marks were there for the calculations with amplifiers?

 

[Zaki ali asghar]

how many mars were there for the calculations with amplifiers?

4 for the first two parts i think, one for the gain and then 4 for the voltages and then 1 for the last part

 

[anastasia grey113]

this paper did well to overcome the blunders i made in chem p5 lol

haha well idk but now m worried for stupid things xD
things like...did i switch the answers for max or min frequency?
or did i calculate it correctly?
or did i write yes for sodium and no for zinc or was it the other way round?
its ok it happens
God will reward u according to how hard u worked

 

[amina1300]

this paper did well to overcome the blunders i made in chem p5 lol

My p5 went wyyy better than thiss ((

 

[anastasia grey113]

how many marks were there for the calculations with amplifiers?

youll get an ecf dw
2 for the gain i think
1 each for the voltage
and last one had 1 too

 

[Zaki ali asghar]

haha well idk but now m worried for stupid things xD
things like...did i switch the answers for max or min frequency?
or did i calculate it correctly?
or did i write yes for sodium and no for zinc or was it the other way round?
its ok it happens
God will reward u according to how hard u worked

i swear by night i will be overthinking to the point that i probably missed some question, lol it happens after every exam

 

[haithsoul]

youll get an ecf dw
2 for the gain i think
1 each for the voltage
and last one had 1 too

nice nice how did you sketch the voltage for induction graph?

 

[amina1300]

Someone please write down the marks for each question.