P2a topic 1 static electricity
- Created by: John@11g
- Created on: 31-03-15 11:57
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- static and current electricity
- static electricity
- build-up of static electricity is caused by friction
- when two insulating materials are rubbed together electrons are scrapped off one an put onto another
- this leaves a positive charge on one and a negative charge on the other
- like charges repel, unlike charges attract
- this leaves a positive charge on one and a negative charge on the other
- when two insulating materials are rubbed together electrons are scrapped off one an put onto another
- static electricity can cause little sparks or shocks
- shocks from door handles
- clothing crackles
- car shocks
- lightning is also static electricity
- uses and dangers of static electricity
- uses:
- paint sprayers
- even coat
- nothing goes to waste
- no paint shadows
- paint sprayers
- dangers:
- fuel filling
- cause spark in fuel which explodes
- fuel filling
- solution:
- earthing
- connecting charged object to the ground
- static charge takes the easy route which prevents an explosion
- connecting charged object to the ground
- earthing
- uses:
- build-up of static electricity is caused by friction
- charge and current
- electric current
- rate of flow of charge
- charge= current x time
- more charge passes around the circuit when a bigger current flows
- electric current
- cells and batteries supply direct current
- direct current(d.c.) flows in the same dircetion
- static electricity
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