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Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 96 · 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.

NameDateTime takenScore ___ / 40
  1. 1.📏 How many watts (W) is 2.1 kW?
  2. 2.📏 How many watts (W) is 1.9 kW?
  3. 3.📏 How many watts (W) is 2.6 kW?
  4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
  5. 5.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
  6. 6.Which of these is measured in amperes (A)? (a) power (b) current (c) the push of a cell (d) how much a part resists
  7. 7.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
  8. 8.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
  9. 9.📏 How many kilowatts (kW) is 3600 W? =
  10. 10.True or false: the ammeter is joined across a part. (a) False (b) True
  11. 11.True or false: the voltmeter is joined across a part. (a) True (b) False
  12. 12.True or false: the ammeter is joined in series. (a) True (b) False
  13. 13.True or false: power is measured in watts (W). (a) True (b) False
  14. 14.📏 How many kilowatts (kW) is 1550 W? =
  15. 15.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
  16. 16.True or false: voltage is measured in volts (V). (a) False (b) True
  17. 17.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
  18. 18.True or false: current is measured in amperes (A). (a) True (b) False
  19. 19.True or false: the voltmeter measures voltage. (a) False (b) True
  20. 20.True or false: the voltmeter is joined in series. (a) True (b) False
  21. 21.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
  22. 22.📏 How many milliamperes (mA) is 0.01 A?
  23. 23.📏 How many amperes (A) is 2970 mA? =
  24. 24.📏 How many watts (W) is 0.7 kW?
  25. 25.True or false: the ammeter measures current. (a) False (b) True
  26. 26.📏 How many watts (W) is 2.3 kW?
  27. 27.📏 How many milliamperes (mA) is 2.45 A?
  28. 28.📏 How many milliamperes (mA) is 2.34 A?
  29. 29.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
  30. 30.📏 How many milliamperes (mA) is 1.96 A?
  31. 31.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
  32. 32.📏 How many watts (W) is 0.9 kW?
  33. 33.📏 How many ohms (Ω) is 3.1 kΩ?
  34. 34.📏 How many amperes (A) is 2960 mA? =
  35. 35.📏 How many kilowatts (kW) is 4300 W? =
  36. 36.📏 How many milliamperes (mA) is 1.77 A?
  37. 37.📏 How many amperes (A) is 730 mA? =
  38. 38.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
  39. 39.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
  40. 40.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure

Answer key

  1. 2100
  2. 1900
  3. 2600
  4. 1000
  5. volt (V)
  6. current
  7. ampere (A)
  8. False
  9. 3.6
  10. False
  11. True
  12. True
  13. True
  14. 1.55
  15. ohm (Ω)
  16. True
  17. ampere (A)
  18. True
  19. True
  20. False
  21. volt (V)
  22. 10
  23. 2.97
  24. 700
  25. True
  26. 2300
  27. 2450
  28. 2340
  29. voltmeter
  30. 1960
  31. the water pressure
  32. 900
  33. 3100
  34. 2.96
  35. 4.3
  36. 1770
  37. 0.73
  38. ammeter
  39. watt (W)
  40. a narrow pipe

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