Mains Electricity

  • Created by: ruqaiyah
  • Created on: 29-05-12 18:04

AQA Additional Science- Mains Electricity. 

Circuit breakers and Fuses

Circuit breakers are electromagnetic switches which switch off and break the circuit if there is too much voltage/potential difference is too high or too low. The switch cuts off if there is too much current. The advantage is that it can be reset and fixed. 

Fuses are thin piece of wire which also can prevent the


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