https://padlet.com/fkthang/nylrkf3k3whvsngc Posting of 2017 O-Level questions en-us 2020-07-29 23:59:11 UTC 2025-09-24 14:01:00 UTC hello@padlet.com https://padlet.com/fkthang/nylrkf3k3whvsngc/wish/670090737 Qn 5c(ii) Can the answer be about the possibility of point B being located at other points that are in phase with B. Therefore, the wavelength will vary and affect the speed
6a) Is earth wire accepted as an answer?
7b) Why should the answer include the vertical position when the split-ring commutator plays no part in helping the coil to rotate?

]]> 2020-08-05 13:09:58 UTC https://padlet.com/fkthang/nylrkf3k3whvsngc/wish/670090737 https://padlet.com/fkthang/nylrkf3k3whvsngc/wish/692765686 10biv) Can use inertia to explain why the mass moves towards the back of the car?]]> 2020-08-22 07:34:52 UTC https://padlet.com/fkthang/nylrkf3k3whvsngc/wish/692765686 https://padlet.com/fkthang/nylrkf3k3whvsngc/wish/751402202 Q2b the diagram in the answer sheet is different from the actual question. 
Does it changes the answer?]]> 2020-09-16 13:14:29 UTC https://padlet.com/fkthang/nylrkf3k3whvsngc/wish/751402202 https://padlet.com/fkthang/nylrkf3k3whvsngc/wish/751429775 2020-09-16 13:20:50 UTC https://padlet.com/fkthang/nylrkf3k3whvsngc/wish/751429775 https://padlet.com/fkthang/nylrkf3k3whvsngc/wish/751565125 Q6bii) need to state that excess current would increase risk of fire?
Q7aii) need to state thumb perpendicular to forefinger and second finger?
Q7b) same direction refers to anti-clockwise direction? Because upward and downward are different direction.
Also do we need to state that the current would flow through AB again in the opposite direction then before?]]> 2020-09-16 13:50:41 UTC https://padlet.com/fkthang/nylrkf3k3whvsngc/wish/751565125 https://padlet.com/fkthang/nylrkf3k3whvsngc/wish/751990336 Q11 either a) need to mention ' such as temperature ' ?
Cii why does current IB remains unaffected?]]> 2020-09-16 15:21:37 UTC https://padlet.com/fkthang/nylrkf3k3whvsngc/wish/751990336