CAIE Oct-Nov 2016 (43)-IGCSE- Physics-0625-Solved By Raza Kayani

[@mattg9171]

Hey, last question is wrong.. they said n. Of atoms that decay, so 9.6×10¹⁰ - 1.2×10¹⁰ = 8.4×10¹⁰!!!!
The 1.2×10¹⁰ is the remaining,not that decayed.

[@maryamaurangzaib7176]

8:54 c(i) why not divide 12/20?
Can you tell why we have to divide the voltage by 48 that the combined resistance of 20 ohm and 28 ohm its asking to find the current in 20 ohm only

[@fatimahusain8803]

i thought the same thing, i think it’s maybe because it’s connected in series so the current will be same all around unlike parallel.

[@heluvs_chichie8914]

Thank you ❤

[@huskyfan201]

Could someone explain Q10ai? I am not sure how to get the answer..

[@mattg9171]

Still need help ?

[@SamuelTewodros-l9j]

I LOVE IT😍