2020

• How to wire a UK plug (step-by-step):

  1. Live wire = Brown

  • Goes to the right pin
  • Connects to the fuse
  • Carries current into the appliance

  1. Neutral wire = Blue

  • Goes to the left pin
  • Carries current out of the appliance (back to the power source)

  1. Earth wire = Green and Yellow stripes

  • Goes to the top pin (longest one)
  • For safety – stops electric shocks
• main electricity supply in UK

  -pd is 230V

  -frequency is 50Hz
• pddfifernce btw the neutral wire and earth wire

  0V
• fuse symbol

  yh

  
• alpha particle

  -4 on top

  -2 on bottom if go like ---->
• beta particle

  top is same

  bottom +1
• gamma radiation consists of

  electromagnetic waves
• what type of fuel is wood

  a renewable biofuel
• 2 environmental effects of using wood as an energy resource

  -destruction of habitats

  -Wood burning causes air pollution
• solid

  vibrate in fixed positions
• if liquid is cooled and frozen

  KE decreses

  and

  PE decreses
• radioactive decay

  is a random process