Edexcel IGCSE Chemistry and Physics

I'm doing the IGCSE, the GCP science books aren't too helpful for me - they cover many topics I don't do with IGCSE, and the topics they cover are never in enough depth.

I really don't find the CGP books useful with often lurid illustrations and I believe that my notes will probably help me best

i am scared aswell

although i find chemistry kinda easy and physics impossible to the extreme

hello....

i just decided that i want to do physics 1 month ago, and so when i got the confirmation after registering i started reading at home and its been only 3 weeks, and am really scared, can anyone please help me out as in how to revise and get through it. i did the paper 3 and it was fine apart from the refraction and electricity questions.....

I dont have any past papers also.. all i have is collins and the longman igcse text books.

PLS HELP!!!!!!!!!!

what the hell is a dynamo? I don't get any of that flux stuff...

i really dont understand radioactivity it sucks big time

Right Lads and Lasses. Quick masterclass in electromagnetism from The Phenomenal One.
Like poles repel.
Unlike poles attract.
Suspend a magnet and it acts like a compass, it finds MAGNETIC NORTH, not geographic north.
magnet + non magnet = nothing
Magnet + magnetic = attraction by magnet
Magnet + magnetised item = one side attracts, the other repels
field lines go North to South
soft iron used, because it can be magnetised and demagnetised (by reversing the current)
Steel used because its a perminant magnet.
ELECTROMAGNETIC INDUCTION
Magnet rotating in coil/ Coil rotating and magnet stationary
A conductor CUTS field lines
Magnetic field in circuit changes = voltage INDUCED
Increasing induced voltage:
More turns on coil
Increase speed of coil
Use stronger magnet(magnetic field)
Increase area of coil.
Produces alternating voltage +/-
Parts of the coil:
Copper coil, good conductor
Graphite brushes, lubricant, good conductor
Copper commutator rings, Good conductor
FLEMINGS LEFT HAND RULE: Used for Motors (dont worry lads there is a right hand rule too )
First finger = Field direction
seCond finger = Current direction
thuMb = Motion
If current in coil runs PARALLEL to field lines, NO INDUCTION, NO FIELD LINES CUT
Tell me if u need more
Phenomenal1

Right Lads and Lasses. Quick masterclass in electromagnetism from The Phenomenal One.
Like poles repel.
Unlike poles attract.
Suspend a magnet and it acts like a compass, it finds MAGNETIC NORTH, not geographic north.
magnet + non magnet = nothing
Magnet + magnetic = attraction by magnet
Magnet + magnetised item = one side attracts, the other repels
field lines go North to South
soft iron used, because it can be magnetised and demagnetised (by reversing the current)
Steel used because its a perminant magnet.
ELECTROMAGNETIC INDUCTION
Magnet rotating in coil/ Coil rotating and magnet stationary
A conductor CUTS field lines
Magnetic field in circuit changes = voltage INDUCED
Increasing induced voltage:
More turns on coil
Increase speed of coil
Use stronger magnet(magnetic field)
Increase area of coil.
Produces alternating voltage +/-
Parts of the coil:
Copper coil, good conductor
Graphite brushes, lubricant, good conductor
Copper commutator rings, Good conductor
FLEMINGS LEFT HAND RULE: Used for Motors (dont worry lads there is a right hand rule too )
First finger = Field direction
seCond finger = Current direction
thuMb = Motion
If current in coil runs PARALLEL to field lines, NO INDUCTION, NO FIELD LINES CUT
Tell me if u need more
Phenomenal1