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Exam Hack | CIE A2 Physics | Structured | Capacitance Question

This is "Exam Hack | CIE A2 Physics | Structured | Capacitance Question" by Intuitive on Vimeo, the home for high quality videos and the people who love them.

Comments

Mzi Mabs

great video , please do magnetic fields next ?

Dhruvi Jain

hello could you please upload videos for p3 and s2

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!

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?

Myles Taaziva

Wouldn't the resistance for the 2nd question c) (ii) be 46 instead of 4.6?

Shareq

Yup, slight typo I guess, maybe he rushed it but its in kΩ so 46(000 Ω of course)