Static Electricity Flashcards
What atoms are in the nucleus?
Protons and neutrons
What is in the outer shell of a atom?
Electrons
What are the charge of protons ?
Positive
What is the charge of neutrons ?
Neutral -no charge
What is the charge of electrons ?
Negative
What happens when a positive and negative charge comes together ?
They lose and electron
What happens when a proton and a proton or a electron and a electron come together ?
They gain and electron
What are ions done by ?
Friction
What is the law of Electrostatics?
Like charges repel
Unlike charges attract
Where are all charges discharged to?
Earth
What is a Thermistor?
Resistor which is affected by temp.
Temp rises
Resistance drops
Current rises
What is a LDR and what happens ?
Light dependent resistor
Light rises
Resistance drops
Current increased
What is Alternating potential difference?
Sockets
This goes from +230v to -230. Constantly changing between the two
How do u calculate potential difference?
Potential difference (v)= current (A) x resistance (o)
V=IxR
How many wires are in a plug?
3 wires
What is the earth wire for?
It is the safety wire
What is the live wire for?
Transfers the energy In
What is the neutral wire for?
It complete the circuit
What colour is the neural wire ?
Blue
What is the colour of the earth wire?
Green and yellow
