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P2 - Electricity (Equations (P = VxI (V - voltage in V, I - current in A,…

- - - - I - current in A
      - t - time in s
      - Q - charge in C (Coulombs)
  - - - V - voltage in V
      - I - current in A
      - R - resistance in ohms
  - - - R - resistance in ohms
      - I - current in A
      - P - power loss in W
  - - - P - power in W
      - t - time in s
      - E - energy in J
- - - - In a series circuit the current in THE SAME at any point
      - In a series circuit the voltage SPLITS UP over each component
      - In a series circuit the total resistance is the sum of resistance of each component
    - - In a parallel circuit the current SPILTS UP down each 'loop'
      - In a parallel circuit the voltage is THE SAME across each 'loop'
      - In a parallel circuit the total resistance is less than the resistance of the smallest individual resistor
- - - - Alternating Current
        
        This is when the current is constantly changing direction
    - - Direct Current
        
        This is when the current moves in the same direction
  - - - Neutral wire - 0 V
      - 2 core
        
        doesn't have an Earth wire - for lighting and is safe
      - Earth wire - stops electrocution
        
        Used in appliances with metal casings
      - 3 core
        
        has all three wires for more powerful devices
      - Live wire - carries 230 V
  - - - Step up transformer
        
        Pylons
        
        Step-down transformers
        
        Homes
        
        Reducing voltage
        
        Increasing voltage