howse

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Author:
McAuley
ID:
143131
Filename:
howse
Updated:
2012-03-22 10:29:58
Tags:
mcauley science
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Description:
the best of the bestist
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  1. .
  2. Why are plugs made of plastic?
    It is an insulator plastic does not melt when a plug gets hot
  3. What is an isotope?
    They occur when an element atoms exists with a different number of nuetrons
  4. What are beta particles made of?
    An electron particle of a negative charge
  5. What are alpha particles made of?
    Two protons and two nuetrons
  6. positive charges do not....
    move
  7. how is lightening made?
    when hot air meets cold air
  8. what does DC stand for?
    direct current
  9. what does AC stand for?
    alternating current
  10. charge =
    current x time
  11. power =
    voltage x current
  12. energy =
    power x time
  13. what does the green and yellow wire stand for?
    earth
  14. what does the colour blue stand for in wiring?
    neutral
  15. potential difference = 20v
    current = 2 amps
    resistance = ?
    10ohms
  16. Resistance =
    • potential difference
    • current
  17. Energy transformed =
    charge x potential difference
  18. Total charge =
    current x time

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