Yr 11 - SCP - Static Electricity (electricity)

Question 1

Define charge

Answer 1

a property of matter that causes it to experience a force when placed in a magnetic field

Question 2

how do positive and negative interact/what are they

Answer 2

positive - more proton than electron
negative - more electron than proton
they attract when not like charge

Question 3

what is uniform and non-uniform charge distribution

Answer 3

uniform - all charges (electron and proton) are evenly spaced
nonuniform - more of one charge on part of the object due to repulsion

Question 4

What is a conductor and insulter and how do they work

Answer 4

Conductor - has few electrons (realises easily) in valence and so they are easily transferred
Insulator - has lots of valence electrons (holds onto them) and so not easily transferred

Question 5

define earthing

Answer 5

A process where a pathway is provided so that excess electrons can flow to the ground or electrons can flow to the object and cancel out positive charge

Question 6

why is earthing important

Answer 6

It is a safety feature that allows extra charge to disperse into the ground instead of endangering peoples lives when there is an electric fault

Question 7

How do objects become charged and discharged

Answer 7

electrons are moved (gained/lost) from one object to another through friction for example

Question 8

Define charge seperation

Answer 8

electrons or protons accumulate to one side of the object (inducing a charge)

Question 9

How do charges become separated through friction

Answer 9

electrons are scrapped from one object to another

Question 10

Everyday uses of static electricity

Answer 10

electrostatic painting - charge given to paint to stick to object with opposite easier

electrostatic precipitators - particles gain a charge and then attracted to plates and removed

photocopier -