Biology; Chemistry; Physics: Post your doubts here!

[Spidey21]

MashAllah , the only option left was A , we should have tried it as well
there would be quite a variety then

what made you guys think that it was B or C?

it could never have been either of them..:|

 

[Talhakhan]

MashAllah , the only option left was A , we should have tried it as well
there would be quite a variety then

 

[ashiqbal]

what made you guys think that it was B or C?

it could never have been either of them..:|

exactly yar! apply Lenz's law! there are two whole pages in our "chow seing fong nyak hong" book!

 

[Spidey21]

exactly yar! apply Lenz's law! there are two whole pages in our "chow seing fong nyak hong" book!

yeah whoever that chinese guy was...he wrote a nice book...

 

[Spidey21]

exactly yar! apply Lenz's law! there are two whole pages in our "chow seing fong nyak hong" book!

btw isnt it "hoo soo yung"

 

[Talhakhan]

http://www.xtremepapers.com/papers/...onal O Level/Physics (5054)/5054_w03_qp_1.pdf
MCQ 37 answer with detail.... HELP!!!!!!!

 

[Spidey21]

http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Physics (5054)/5054_w03_qp_1.pdf
MCQ 37 answer with detail.... HELP!!!!!!!

D again..

 

[Rimsa]

D again..

why? :O

 

[Talhakhan]

D again..

Explaination if u like......

 

[Spidey21]

why? :O

Explaination if u like......

well the resistance will be highest when the potential divider is allowing current to pass through...wait let me just check it again..
sorry..

 

[Talhakhan]

well the resistance will be highest when the potential divider is allowing current to pass through...wait let me just check it again..
sorry..

Examiner report says large number of student opted wrong answer ....RIGHT one is option A .... But why A i need some help... I did got the maximim reading but how is minimum value zero.....

 

[Spidey21]

Examiner report says large number of student opted wrong answer ....RIGHT one is option A .... But why A i need some help... I did got the maximim reading but how is minimum value zero.....

sorry i did not question right..
wait..
i accidently took the values of R

 

[Spidey21]

why? :O

Explaination if u like......

well the answer has to be A

cuz have a look at the formula
V(out)=(R2/R1+R2)x V
V out is the voltage that will be at the Voltmeter..

 

[asd]

http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Physics (5054)/5054_w03_qp_1.pdf
MCQ 37 answer with detail.... HELP!!!!!!!

A is the answer, well i never used that V(out) formula. Here is the explanation: see the total em.f is 4V, if the Potential divider is at highest resistance, there will be 2V-2V p.d across both resistors because in this case the resistance of both becomes the same and the voltage will be divided. If the potential divider goes to 0 ohms, there will be no resistance and therefore the reading should be 0V.

Hope this helps!!

 

[Spidey21]

A is the answer, well i never used that V(out) formula. Here is the explanation: see the total em.f is 4V, if the Potential divider is at highest resistance, there will be 2V-2V p.d across both resistors because in this case the resistance of both becomes the same and the voltage will be divided. If the potential divider goes to 0 ohms, there will be no resistance and therefore the reading should be 0V.

Hope this helps!!

o ohms - o volts??

 

[asd]

o ohms - o volts??

0 ohms, the resistance actually.

 

[Spidey21]

oh ok...
sorry did not understand it!!

 

[ashiqbal]

btw isnt it "hoo soo yung"

kon dekh raha hai???

 

[Nizo]

okai guyz...tomorrow is biology paper 6. any advices on what shoul i focus on plz ? im terrified of tomorrow's exam

 

[paradoX error]

okai guyz...tomorrow is biology paper 6. any advices on what shoul i focus on plz ? im terrified of tomorrow's exam

Focus in studies do past papers LOL