Static Electricity Flashcards
Panting bikes using SE
Paint droplets are negative so repel each other and create even cloud
Bike frame positively charged so paint sticks to bike
Static electricity
When charge builds up on an object and doesn’t move
Photocopying using SE
Metal plates electrically charged and image projected onto it
Where white parts of photo projects light and charge leaks away
Charges parts attract ink and this is transferred to paper
Paper heated so ink sticks
Chimney using SE
Metal grid negatively charged and dust particles go through it and become negative
They repel each other then attract to positive plates on sides of chimney
Hammers hit against plates and dust particles are collected
Dangers of SE hospitals
Flammable gases in operating theatres
If spark created then would blow up
Doctors wear plastic shoes and floors are made of conducting material
Dangers of SE aeroplanes
Static electricity builds up between plane and fuel tank
Tiny spark can blow up the petrol
Plane is earthed to stop SE building up
Dangers of SE cars
Build up SE in contact with road or on driver from clothes
If you touch petrol nozzle while its in car the charge will discharge through nozzle and blow up petrol
Illegal to get into car while its filling up
TV gathering dust SE
Screen is negative
Dust is neutral so attracts to screen
Wiping increases negative charge of screen
Anti static cloths
