Electricity

• Charge


  Current x Time
• Series circuits have...


  no branches/loops
• An electric current is the flow of charge
• In a series circuit, current is the same all the way around.
• A parallel circuit contains branches
• The current in the branches add up to the total current leaving the cell.
• Voltmeters must be added in parallel
• Adding more lamps to a circuit makes theit light dimmer
• The total potential difference is the same as the potential difference across the cell
• For components connected in parallel, the potential difference across each component is the same.
• The resistance of a thermistor decreases as the temperature increases.
• Moving from a solid to a liquid

  Melting
• Moving from a liquid to a gas

  Evaporation
• Moving from a gas to a liquid

  Condensation
• Moving from a liquid to a solid


  Freezing
• AC is...


  Alternating current
• AC has a frequency of

  50Hertz
• AC has a voltage of

  230V
• The brown wire is...

  The live wire, carries the potential difference. Its connected to the fuse
• The blue wire is...

  The neutral wire. Completes the circuit and has 0V
• The green/yellow wire is...

  The earth wire. It is a safety wire to stop the appliance from becoming live
• The National Grid is a system of cables and transformers that carries electricity around the UK