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Flashcards

LEARN IT 2: Electricity

Isleworth Physics Physics GCSE Inglês 69 flashcards

LEARN IT 2: Electricity

Flashcards do conjunto (69)

  1. 1Draw the circuit symbols for: switch open, switch closed, cell, battery, diode, resistor, variable resistor, LED (light emitting diode), lamp, fuse, voltmeter, ammeter, thermistor, LDR
  2. 2What is current?What is current?
  3. 3What must there also be in a closed circuit for electrical charge to flow?What must there also be in a closed circuit for electrical charge to flow?
  4. 4What is another word for potential difference?What is another word for potential difference?
  5. 5What is the formula that links charge, current and time?What is the formula that links charge, current and time?
  6. 6What are the units for charge?What are the units for charge?
  7. 7What two things affect the size of the current flowing in a circuit?What two things affect the size of the current flowing in a circuit?
  8. 8What is the formula that links potential difference, current and resistance?What is the formula that links potential difference, current and resistance?
  9. 9What are the units for resistance?What are the units for resistance?
  10. 10What is resistance?What is resistance?
  11. 11What is potential difference?What is potential difference?
  12. 12Where in a circuit should you always put an ammeter?Where in a circuit should you always put an ammeter?
  13. 13Where in a circuit should you always put a voltmeter?Where in a circuit should you always put a voltmeter?
  14. 14What is an ohmic conductor? Give an example.What is an ohmic conductor? Give an example.
  15. 15What is the mathematical relationship between current and voltage for an ohmic conductor?What is the mathematical relationship between current and voltage for an ohmic conductor?
  16. 16What is a non-ohmic conductor? Give two examplesWhat is a non-ohmic conductor? Give two examples
  17. 17What is the difference between a linear and non-linear relationWhat is the difference between a linear and non-linear relation
  18. 18What is the I-V (current-voltage) graph for a resistor?What is the I-V (current-voltage) graph for a resistor?
  19. 19Why is the I-V graph for a resistor that shape?Why is the I-V graph for a resistor that shape?
  20. 20What is the mathematical relationship between I and V for the resistor graph? How do you know?What is the mathematical relationship between I and V for the resistor graph? How do you know?
  21. 21What is the I-V graph for a filament lamp?What is the I-V graph for a filament lamp?
  22. 22Why is the I-V graph for a filament lamp that shape?Why is the I-V graph for a filament lamp that shape?
  23. 23What is the I-V (current-voltage) graph for a diode?What is the I-V (current-voltage) graph for a diode?
  24. 24Why is the I-V graph for a diode that shape?Why is the I-V graph for a diode that shape?
  25. 25How does the resistance of a thermistor change with temperature?How does the resistance of a thermistor change with temperature?
  26. 26Sketch a resistance-temperature graph for a thermistorSketch a resistance-temperature graph for a thermistor
  27. 27What is a thermistor used for?What is a thermistor used for?
  28. 28How does the resistance of an LDR change with light intensity?How does the resistance of an LDR change with light intensity?
  29. 29Sketch a resistance-light intensity graph for an LDRSketch a resistance-light intensity graph for an LDR
  30. 30What is an LDR used for?What is an LDR used for?
  31. 31Sketch the circuit diagram used to find the resistance of a component (by measuring the current through it and the potential difference across it)Sketch the circuit diagram used to find the resistance of a component (by measuring the current through it and the potential difference a...
  32. 32What happens if you remove a component in a series circuit?What happens if you remove a component in a series circuit?
  33. 33What happens if you remove a component in a parallel circuit?What happens if you remove a component in a parallel circuit?
  34. 34What is the rule for current in a series circuit?What is the rule for current in a series circuit?
  35. 35How is the potential difference of the power supply given to components in a series circuit?How is the potential difference of the power supply given to components in a series circuit?
  36. 36What would cause one component in a series circuit to get a bigger share of the potential difference from the supply?What would cause one component in a series circuit to get a bigger share of the potential difference from the supply?
  37. 37How could you find the total resistance of components in series?How could you find the total resistance of components in series?
  38. 38What is the rule for current in a parallel circuit?What is the rule for current in a parallel circuit?
  39. 39How is the potential difference of the power supply given to components in a parallel circuit?How is the potential difference of the power supply given to components in a parallel circuit?
  40. 40What would cause one component in a parallel circuit to get a bigger share of the current?What would cause one component in a parallel circuit to get a bigger share of the current?
  41. 41What is the total resistance of two resistance in a parallel circuit always less than?What is the total resistance of two resistance in a parallel circuit always less than?
  42. 42In the UK, the mains supply has a frequency of 50Hz. What does this mean?In the UK, the mains supply has a frequency of 50Hz. What does this mean?
  43. 43What is direct current (DC)? Give an example of something that provides DC?What is direct current (DC)? Give an example of something that provides DC?
  44. 44What is alternating current (AC)? Give an example of something that provides AC?What is alternating current (AC)? Give an example of something that provides AC?
  45. 45List the names and colours of the wires inside a 3-pin plugList the names and colours of the wires inside a 3-pin plug
  46. 46Why are the wires in a plug made of copper?Why are the wires in a plug made of copper?
  47. 47Why are the cables and the plug covered in plastic or rubber?Why are the cables and the plug covered in plastic or rubber?
  48. 48How are the live and neutral wires connected to an appliance?How are the live and neutral wires connected to an appliance?
  49. 49What is the potential difference between the live wire and the earth wire?What is the potential difference between the live wire and the earth wire?
  50. 50What is the potential difference between the live wire and the neutral wire?What is the potential difference between the live wire and the neutral wire?
  51. 51Why is there still a danger of electric shock from a plug/light switch even if it is switched off?Why is there still a danger of electric shock from a plug/light switch even if it is switched off?
  52. 52What is the job of the earth wire?What is the job of the earth wire?
  53. 53How do the earth wire and fuse work together to protect the user?How do the earth wire and fuse work together to protect the user?
  54. 54When charge flows through a resistor, what energy store is the energy transferred into?When charge flows through a resistor, what energy store is the energy transferred into?
  55. 55When charge flows through a kettle, what energy store is the energy transferred into?When charge flows through a kettle, what energy store is the energy transferred into?
  56. 56What does work done mean?What does work done mean?
  57. 57What two things affect the amount of energy transferred by an electrical appliance?What two things affect the amount of energy transferred by an electrical appliance?
  58. 58What is the formula that links energy transferred, power and timeWhat is the formula that links energy transferred, power and time
  59. 59What are the two formulae that link power, potential difference, current and resistance?What are the two formulae that link power, potential difference, current and resistance?
  60. 60If an appliance has a high power rating, what does this mean?If an appliance has a high power rating, what does this mean?
  61. 61What is the National Grid?What is the National Grid?
  62. 62What is a step-up transformer?What is a step-up transformer?
  63. 63What is a step-down transformer?What is a step-down transformer?
  64. 64Explain why step-up transformers are used in the national gridExplain why step-up transformers are used in the national grid
  65. 65Explain why step-down transformers are used in the National GridExplain why step-down transformers are used in the National Grid
  66. 66Describe how to carry out a practical to investigate how the length of a wire affects its resistanceDescribe how to carry out a practical to investigate how the length of a wire affects its resistance
  67. 67Describe how to carry out a practical to investigate the resistance of resistors in series and parallelDescribe how to carry out a practical to investigate the resistance of resistors in series and parallel
  68. 68Describe how to carry out a practical to find the I-V (current-voltage) characteristics of a component, e.g. a filament lamp, diode or resistorDescribe how to carry out a practical to find the I-V (current-voltage) characteristics of a component, e.g. a filament lamp, diode or re...
  69. 69Symbols, names and units for equationsSymbols, names and units for equations

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GCSE Physics FlashCards sobre LEARN IT 2: Electricity, criado por Isleworth Physics em 09-05-2018.
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