Domestic uses and safety common mistakes

Common mistakes

• Direct and alternating potential difference common mistake 1

  Giving a vague answer instead of directly addressing: Explain that mains electricity is an alternating-current supply..

  Fix itAnswer by clearly explaining how to explain that mains electricity is an alternating-current supply..

• Direct and alternating potential difference common mistake 1

  Giving a vague answer instead of directly addressing: State that the UK domestic electricity supply has a frequency of 50 Hz..

  Fix itAnswer by clearly explaining how to state that the UK domestic electricity supply has a frequency of 50 Hz..

• Direct and alternating potential difference common mistake 1

  Giving a vague answer instead of directly addressing: State that the UK domestic electricity supply is about 230 V..

  Fix itAnswer by clearly explaining how to state that the UK domestic electricity supply is about 230 V..

• Direct and alternating potential difference common mistake 1

  Giving a vague answer instead of directly addressing: Explain the difference between direct potential difference and alternating potential difference..

  Fix itAnswer by clearly explaining how to explain the difference between direct potential difference and alternating potential difference..

• Direct and alternating potential difference common mistake 1

  Giving a vague answer instead of directly addressing: Identify cells and batteries as common sources of direct potential difference..

  Fix itAnswer by clearly explaining how to identify cells and batteries as common sources of direct potential difference..

• Direct and alternating potential difference common mistake 1

  Giving a vague answer instead of directly addressing: Identify mains electricity as a common source of alternating potential difference..

  Fix itAnswer by clearly explaining how to identify mains electricity as a common source of alternating potential difference..

• Mains electricity common mistake 1

  Giving a vague answer instead of directly addressing: Describe most mains appliances as being connected using a three-core cable..

  Fix itAnswer by clearly explaining how to describe most mains appliances as being connected using a three-core cable..

• Mains electricity common mistake 1

  Giving a vague answer instead of directly addressing: Identify the live wire as brown..

  Fix itAnswer by clearly explaining how to identify the live wire as brown..

• Mains electricity common mistake 1

  Giving a vague answer instead of directly addressing: Identify the neutral wire as blue..

  Fix itAnswer by clearly explaining how to identify the neutral wire as blue..

• Mains electricity common mistake 1

  Giving a vague answer instead of directly addressing: Identify the earth wire as green and yellow striped..

  Fix itAnswer by clearly explaining how to identify the earth wire as green and yellow striped..