key terms

Question 1

thermistor

Answer 1

uses central heating and only lets current flow at certain temperatures

Question 2

how is electricity shared in a series

Answer 2

current is the same
total potential difference is split across components
resistance is r1+r2

Question 3

parallel

Answer 3

total current is split across branches

resistance is
1/r1 +1/r2

Question 4

what’s the mains electricity in theuk

Answer 4

230 v

50 hertz

Question 5

components of a cable

Answer 5

green is earth wire
brown is live wire 
neutral is blue wire 
cable grip
fuse
flex

Question 6

calculate energy

Answer 6

charge x potential difference

Question 7

density

Answer 7

mass in a set volume

m/v

Question 8

shc

Answer 8

how much energy required to raise 1kg of a substance by 1 degree

mass x temperature change x shc

Question 9

slc

Answer 9

specific latent heat is energy required to change a solid to a liquid

energy - mass x latent heat

Question 10

order of atomic models

Answer 10

thompson - plum pudding
rutherford - alpha particle
bohr- nuclear

Question 11

types of radiation

Answer 11

alpha - helium nucleus . 4/2 ,large , highly ionising , stopped by paper or skin
gamma -
beta -