Hi everybody ? How did your exam go ? Mine went really well unlike chem u3 :V What was your value for resistivity ?
It was great, better that yesterday chem 3. What did u write on how to keep current constant? and the other question about "comment on her plan" For resistivity I got some 1.03x10^-6. something very close to that, I don't remember exactly.
For her plan I calculated the percentage uncertainty which was about 12% and said that it was too high, also to keep current constant with a variable resistor What did you answer for the vernier calliber question
It was great, better that yesterday chem 3. What did u write on how to keep current constant? and the other question about "comment on her plan" For resistivity I got some 1.03x10^-6. something very close to that, I don't remember exactly.
To keep current constant, use variable resistor and in that question, i wrote that the student's plan is unreliable because human reaction time is involved. she should use light gates to improve reliability of her results.
To keep current constant, use variable resistor and in that question, i wrote that the student's plan is unreliable because human reaction time is involved. she should use light gates to improve reliability of her results.
I said use variable resistor too. I got the Vernier caliper question wrong. I think its A. I said exactly the same this. Human reaction, light gates and also calaulate the distance
did anyone get their gradient as 4.5? I made a major error.... i used the diameter on its own as area. how much do you guys think ill get out of 4? For keeping current constant i mentioned using a power pack set at 0.11A. Any chance its correct?
did anyone get their gradient as 4.5? I made a major error.... i used the diameter on its own as area. how much do you guys think ill get out of 4? For keeping current constant i mentioned using a power pack set at 0.11A. Any chance its correct?
Yeah I got my gradient as 4.444 recurring. You probably lost 2 marks coz you didnt divide by 2 (lose 1 mark) and your overall answer is incorrect (lose another mark).
Idk about your answer for the constant current one, but from past papers, I think to maintain a constant current, you use a variable resistor.
did anyone get their gradient as 4.5? I made a major error.... i used the diameter on its own as area. how much do you guys think ill get out of 4? For keeping current constant i mentioned using a power pack set at 0.11A. Any chance its correct?
I got gradient at 4.91, I did again using different figures and it came to 4.88.
Alright I got gradient as 4.54 recurring, rounded off to 4.55. My resistivity value was 1.12x10^-6. Do you think my answer fits within the range of possible values? Also, my graph didn't go through the origin, will I lose a mark?
1-Relation b/w graph2-Which is Derived SI quantity3- Reading From Vernier Caliper4-Free Fall of ball find G5-Find Mean 6- (a)Find Range(B) Percentage uncertainty (C) how far her results were reliable7- Design Experiment to measure Refractive Index of Rectangular8-a How to measure Diametre of wireB how to keep current constantC: fill values in tableD:Plot graphE find gradientF Find resistivity G why the resistivity of same wire was different from ur calculated value assuming all calculations are correct