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1. why is the voltage stepped up for long- distance transportation in cables?

  • because less energy is lost
  • it's cheaper
  • it makes the journey faster
  • it's easier to transport the energy
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Other questions in this quiz

2. how do we know if an image is virtual?

  • the image is larger
  • the image cannot be projected onto a screen
  • the image is smaller
  • the image doesn't look real

3. what is the definition of u-value?

  • it measures the cost of an electrical device
  • the measure of how effective a material is as an insulator
  • the value of how much it costs to pay a material back compared to the amount of money it saves

4. what voltage is supplied to homes?

  • 230V
  • 50V
  • 500V
  • 330V

5. what objects lose heat faster?

  • objects with a small surface area
  • objects with a large surface area
  • shiny objects


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