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Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 137 · 40 questions
TalentJR

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

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  1. 1.True or false: the voltmeter measures voltage. (a) False (b) True
  2. 2.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
  3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
  4. 4.📏 How many watts (W) is 0.3 kW?
  5. 5.📏 How many watts (W) is 0.2 kW?
  6. 6.True or false: the ammeter is joined in series. (a) False (b) True
  7. 7.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) how much a part resists (d) resistance
  8. 8.True or false: the voltmeter is joined in series. (a) True (b) False
  9. 9.True or false: current is measured in volts (V). (a) True (b) False
  10. 10.📏 How many ohms (Ω) is 1.6 kΩ?
  11. 11.📏 How many amperes (A) is 2190 mA? =
  12. 12.📏 How many amperes (A) is 130 mA? =
  13. 13.📏 How many ohms (Ω) is 5.8 kΩ?
  14. 14.📏 How many ohms (Ω) is 1.5 kΩ?
  15. 15.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
  16. 16.📏 How many milliamperes (mA) is 2.68 A?
  17. 17.📏 How many kilo-ohms (kΩ) is 500 Ω? =
  18. 18.📏 How many amperes (A) is 860 mA? =
  19. 19.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
  20. 20.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
  21. 21.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
  22. 22.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
  23. 23.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
  24. 24.📏 How many milliamperes (mA) is 0.52 A?
  25. 25.📏 How many milliamperes (mA) is 0.77 A?
  26. 26.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
  27. 27.True or false: current is measured in amperes (A). (a) False (b) True
  28. 28.Which of these is measured in amperes (A)? (a) current (b) voltage (c) resistance (d) how much a part resists
  29. 29.True or false: the voltmeter is joined across a part. (a) True (b) False
  30. 30.True or false: voltage is measured in watts (W). (a) False (b) True
  31. 31.📏 How many amperes (A) is 1670 mA? =
  32. 32.📏 How many kilo-ohms (kΩ) is 4100 Ω? =
  33. 33.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
  34. 34.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
  35. 35.📏 How many ohms (Ω) is 4.8 kΩ?
  36. 36.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
  37. 37.📏 How many kilo-ohms (kΩ) is 1100 Ω? =
  38. 38.📏 How many kilowatts (kW) is 4750 W? =
  39. 39.True or false: power is measured in volts (V). (a) False (b) True
  40. 40.📏 How many amperes (A) is 100 mA? =

Answer key

  1. True
  2. watt (W)
  3. voltmeter
  4. 300
  5. 200
  6. True
  7. the push of a cell
  8. False
  9. False
  10. 1600
  11. 2.19
  12. 0.13
  13. 5800
  14. 1500
  15. a narrow pipe
  16. 2680
  17. 0.5
  18. 0.86
  19. volt (V)
  20. volt (V)
  21. 1000
  22. the water pressure
  23. voltmeter
  24. 520
  25. 770
  26. ohm (Ω)
  27. True
  28. current
  29. True
  30. False
  31. 1.67
  32. 4.1
  33. the flow of water
  34. ampere (A)
  35. 4800
  36. ammeter
  37. 1.1
  38. 4.75
  39. False
  40. 0.1

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