transformers

• give components of transformer 


  primary coil, secondary coil and iron core
• describe affect on number of turns on potential difference

  more number of turns the higher the potential difference
• describe no. turns in step up transformer 


  no. turns on primary less than no. turns on secondary
• describe no. turns on step down transformer

  no. turns on primary more than no. turns on secondary
• describe process of transformers

  1. alternating pd and current on primary
  2. generate magnetic field around primary
  3. induce magnetic field in iron core
  4. induce alternating pd and current on secondary