Exam Hack | CIE A2 Physics | Structured | Capacitance Question
🕑 Added 2023-08-19 23:02:25 +0000 UTC
Comments
Shareq
Yup, slight typo I guess, maybe he rushed it but its in kΞ© so 46(000 Ξ© of course)
Myles Taaziva
Wouldn't the resistance for the 2nd question c) (ii) be 46 instead of 4.6?
Myles Taaziva
So you just multiply the y value from t=0 by 0.37 then the answer you get you just see where it touches the graph then the x value of that point is your time constant correct? (sorry if I'm literally repeating what you said just want to understand in my own words) and is it always for every case and question going to be 0.37*y value?
Aydan Neveling
Just an additional note for finding the time constant for anyone watching: When the original value of the y axis value decreases to 37% of its original value (y value*0.37), the y value you get from that will correspond with the time constant. For example, the question from 26:38 Original y value (for Q) = 0.9*10^-3. (0.9*10^-3)(0.37) = 3.33*10^-4 (RC or time constant value) Then just visually match 0.33*10^3 as Intuitive shows. Happy studying!
Dhruvi Jain
hello could you please upload videos for p3 and s2
Intuitive
Yep thatβs next
Mzi Mabs
great video , please do magnetic fields next ?
Yemane Teklesenbat
π«Άπ«‘π«‘