random booklet stuff

Question 1

current definition

Answer 1

the rate of flow of charge

Question 2

if component x and y are in series how does current flow

Answer 2

it must pass through x before passing through y

Question 3

if component x and y are in parallel how does current flow

Answer 3

current passes through x and y at the same time

Question 4

how do we measure potential difference

Answer 4

voltmeter

Question 5

what provides pd in a circuit

Answer 5

the battery

Question 6

what makes a battery

Answer 6

two or more cells in series

Question 7

what is resistance a measure of

Answer 7

how difficult it is for current to flow through the component

Question 8

the higher resistance the —— it is for pd to push charges

Answer 8

higher resistance = harder for pd to push charges

Question 9

what does ohmics law state

Answer 9

current is directly proportional to pd

Question 10

what effect does thermistor have on resistance

Answer 10

higher temp lower resistance

Question 11

ldr effect on resistance

Answer 11

higher light intensity is lower resistance

Question 12

thermistor effect on current

Answer 12

higher temp higher current

Question 13

ldr effect on current

Answer 13

higher light intensity higher current

Question 14

what will current be like in series and why

Answer 14

same at all points

bc same amount of charge will pass through every point every second

Question 15

potential difference in series circuit

Answer 15

total pd in battery = sum of pd of other components

Question 16

how does current flow in parallel

Answer 16

split between branches of circuit

Question 17

current rule in parallel

Answer 17

current in battery = sum of current in branches

Question 18

what is pd a measure of

Answer 18

how much energy each coulomb of charge receives from battery

how much energy each coulomb loses when it passes through something

Question 19

pd rule for parallel

Answer 19

pd in battery = pd in each branch

Question 20

resistance rule in parallel

Answer 20

total resistance of circuit is lower than the resistance of the branch with the lowest resistance

Question 21

what does dc stand for

Answer 21

direct current

Question 22

how does charge flow in dc

Answer 22

one direction

Question 23

how does pd flow in dc

Answer 23

remains in constant direction

Question 24

what does ac stand for

Answer 24

alternating current

Question 25

how does charge flow in ac

Answer 25

backwards and forwards

Question 26

how does pd flow in ac

Answer 26

it alternates

Question 27

which out of ac and dc is easier to transport

Answer 27

ac

Question 28

what current is mains electricity

Answer 28

ac

Question 29

what colour is the live wire

Answer 29

brown

Question 30

what colour is the neutral wire

Answer 30

blue

Question 31

what colour is the earth wire

Answer 31

yellow and green

Question 32

what is the pd of live wire

Answer 32

230V

Question 33

pd of earth wire

Answer 33

0V

Question 34

pd of neutral wire

Answer 34

0V

Question 35

what does the live wire do

Answer 35

carries current to appliance

Question 36

what does the neutral wire do

Answer 36

completes the circuit

Question 37

what does the earth wire do

Answer 37

its just for safety ☹️☹️

Question 38

what does the cable grip do

Answer 38

prevents cable pull out

Question 39

why should live wire never touch earth

Answer 39

the earth wire conducts current away if the casing becomes live WTF DOESTHSI MENA

Question 40

whats the national grid

Answer 40

system of cables and transformers that transports electrical power

Question 41

what does the step up transformer do in national grid

Answer 41

increases pd = decrease current = low heating effect = minimises energy dissipation

Question 42

what does step down transformer do in national grid

Answer 42

decrease pd to 230V for safe use in homes

Question 43

what happens when insulating materials are rubbed against each other

Answer 43

they become electrically charged one gains electrons one loses electrons gain = negative charge lose = positive charge

Question 44

why do peoples hair stand up after becoming charged

Answer 44

each strand of hair has the same charge so they repel each other

Question 45

what do field lines show

Answer 45

direction of positive charge

Question 46

how do field lines change according to the strength of force

Answer 46

more field lines = stronger force

Question 47

whats sparking

Answer 47

sorry i dont get sparking 😋😋