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Activate 2 : Electricity & Magnetism

  1. Where in the atom are protons and neutrons found?
    In the nucleus
  2. What do two positive charges do to each other?
    repel
  3. What do a positive and negative charge do to each other?
    Attract
  4. What is the opposite of a positive charge?
    A negative charge
  5. Which sub-atomic particle has a positive charge?
    proton
  6. Which sub-atomic particle has a negative charge?
    electron
  7. Which sub-atomic particle has a neutral charge?
    neutron
  8. Which quantity is the amount of charge flowing through a circuit per second?
    Current
  9. Name the instrument used to measure electrical current
    ammeter
  10. Name the instrument used to measure potential difference
    voltmeter
  11. What is voltage also known as?
    potential difference
  12. Name the two types of electrical circuit
    • Series
    • Parallel
  13. How is an ammeter connected in an electrical circuit?
    in series
  14. How is a voltmeter connected in an electrical circuit?
    In parallel
  15. What is the rule for current in a series circuit?
    It is the same everywhere
  16. What is the rule for current in a parallel circuit?
    Current through the branches adds up to the current through the cell/battery
  17. What is the rule for potential difference in a series circuit?
    The potential difference across the components adds up to the potential difference across the cell/battery
  18. What is the rule for potential difference in a parallel circuit?
    It is the same across all branches
  19. Which quantity is calculated as potential difference ÷ current ?
    Resistance
  20. Name the unit of resistance
    ohm
  21. What are the ends of a bar magnet called?
    (North and south) poles
  22. Name three common magnetic elements
    • Iron, cobalt and nickel
    • (steel is not an element)
  23. Name the area around a magnet where magnetic objects feel a force
    Magnetic field
  24. Which direction do magnetic field lines go?
    North to South
  25. What do two north poles do to each other?
    Repel
  26. What do two south poles do to each other?
    repel
  27. What does a north pole do to an unmagnetised piece of iron?
    attracts it
  28. What does a south pole do to an unmagnetised piece of iron?
    Attracts it
  29. What does a north pole do to a south pole?
    attracts it
  30. Name two ways to investigate the shape of the field around a magnet
    • using :
    • 1) iron filings
    • 2) a plotting compass
  31. What happens when a south pole is brought close to a piece of aluminium?
    Nothing, (as aluminium is not a magnetic material)
  32. What happens when a north pole is brought close to a piece of copper?
    Nothing (as copper is not magnetic)
  33. Draw the magnetic field around a bar magnet
  34. A magnet that can be turned on and off is called an …
    electromagnet
  35. A magnet made using electricity is an ...
    electromagnet
  36. List 3 things you can do to make an electromagnet stronger
    • Add turns
    • Increase current
    • Add an iron core
  37. What is the scientific term for a coil of wire through which a current can be passed?
    solenoid
  38. Name some uses of electromagnets
    • separating materials in a recycling centre
    • electronic door locks
    • motors
    • maglev trains
Author
SilcoatesScience
ID
366208
Card Set
Activate 2 : Electricity & Magnetism
Description
Updated

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