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Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 284 · 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 kilowatts (kW) is 700 W? =
  2. 2.📏 How many ohms (Ω) is 4.5 kΩ?
  3. 3.📏 How many amperes (A) is 2880 mA? =
  4. 4.📏 How many milliamperes (mA) is 0.24 A?
  5. 5.📏 How many milliamperes (mA) is 2.95 A?
  6. 6.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
  7. 7.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
  8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
  9. 9.📏 How many amperes (A) is 1370 mA? =
  10. 10.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
  11. 11.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
  12. 12.📏 How many ohms (Ω) is 3 kΩ?
  13. 13.📏 How many ohms (Ω) is 6.3 kΩ?
  14. 14.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
  15. 15.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
  16. 16.📏 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
  17. 17.📏 How many ohms (Ω) is 2.5 kΩ?
  18. 18.True or false: the flow of charge is measured in volts (V). (a) True (b) False
  19. 19.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
  20. 20.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
  21. 21.📏 How many milliamperes (mA) is 2.8 A?
  22. 22.📏 How many kilowatts (kW) is 3850 W? =
  23. 23.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
  24. 24.True or false: the push of a cell is measured in volts (V). (a) True (b) False
  25. 25.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
  26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
  27. 27.True or false: the voltmeter measures voltage. (a) True (b) False
  28. 28.📏 How many kilo-ohms (kΩ) is 2000 Ω? =
  29. 29.📏 How many milliamperes (mA) is 2.96 A?
  30. 30.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
  31. 31.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
  32. 32.Which of these is measured in amperes (A)? (a) resistance (b) the flow of charge (c) the push of a cell (d) power
  33. 33.📏 How many milliamperes (mA) is 0.38 A?
  34. 34.True or false: energy used each second is measured in amperes (A). (a) False (b) True
  35. 35.📏 How many amperes (A) is 2410 mA? =
  36. 36.True or false: voltage is measured in ohms (Ω). (a) True (b) False
  37. 37.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
  38. 38.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) resistance (d) the push of a cell
  39. 39.📏 How many kilowatts (kW) is 650 W? =
  40. 40.True or false: the ammeter measures current. (a) True (b) False

Answer key

  1. 0.7
  2. 4500
  3. 2.88
  4. 240
  5. 2950
  6. ohm (Ω)
  7. ampere (A)
  8. voltmeter
  9. 1.37
  10. volt (V)
  11. True
  12. 3000
  13. 6300
  14. ampere (A)
  15. volt (V)
  16. a narrow pipe
  17. 2500
  18. False
  19. 7.2
  20. True
  21. 2800
  22. 3.85
  23. watt (W)
  24. True
  25. watt (W)
  26. 1000
  27. True
  28. 2
  29. 2960
  30. ammeter
  31. ammeter
  32. the flow of charge
  33. 380
  34. False
  35. 2.41
  36. False
  37. voltmeter
  38. power
  39. 0.65
  40. True

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