electricity in the home -P5

• What is the term used for a wire that carries electric current?

  Live wire
• What is the term for a device that grips cables?

  Cable grip
• What does 'kilo' represent in terms of conversion?


  1,000
• What is the conversion factor for 'mega'?


  1,000,000
• What is the relationship between 'milli' and 'kilo' in terms of conversion?


  1 milli is 1/1,000 of a unit, while kilo is 1,000 of a unit
• What is the term for a current that flows in one direction?

  Direct current
• What is the formula for calculating power in an electrical circuit?

  Power = current x voltage
• What color is typically used for the earth wire in electrical systems?


  Green and yellow
• What is the purpose of a step-up transformer?


  To increase voltage
• What does a step-down transformer do?


  It decreases voltage
• How is solar energy typically converted for use?


  Through photovoltaic cells
• What is the unit of electric current?

  Ampere
• What is the unit of voltage?


  Volt
• What is the unit of power?

  Watt
• Why is it important to check for conversions in electrical systems?


  To ensure safety and proper functioning
• What are the key components of electrical energy conversion?

  • Direct current (DC) and alternating current (AC)
  • Transformers (step-up and step-down)
  • Power calculation (Power = current x voltage)
  • Safety measures (earth wire)
• What are the prefixes for common electrical unit conversions?

  • Kilo: 1,000
  • Mega: 1,000,000
  • Milli: 1/1,000
  • Nano: 1/1,000,000,000
• What are the functions of different wires in an electrical system?

  • Live wire: carries current
  • Neutral wire: completes the circuit
  • Earth wire: safety, prevents shock
• How do transformers function in electrical systems?


  • Step-up transformer: increases voltage
  • Step-down transformer: decreases voltage
  • Essential for efficient power transmission