How did you do the last part of 3? I worked out the energy stored at 3mC, then used this to find the p.d at 3mC which i then used to find the current through R (should be the same as the capacitor right....) and then finally t = Q/I?
don't remember my answer which is why i'm asking
I used CV=Q to work out V(think I got 8.11V) then used V=V0(1-e) to work out t. My value of t is about 1.8s from memory.
Honestly in my opinion the questions weren't too difficult compared to last year. Remember that cyclotron question? They also had no 6 marker like that nucleur disposal question last year. Therefore I see the questions being slightly easier. The multiple choice on the other hand yeesh it's like they upped the difficult multiple x that I had to guess several