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Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 568 · 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 3650 W? =
  2. 2.True or false: the voltmeter measures voltage. (a) True (b) False
  3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
  4. 4.True or false: the ammeter measures current. (a) False (b) True
  5. 5.True or false: the ammeter is joined in series. (a) False (b) True
  6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
  7. 7.True or false: voltage is measured in volts (V). (a) False (b) True
  8. 8.True or false: energy used each second is measured in watts (W). (a) True (b) False
  9. 9.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
  10. 10.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) resistance (d) power
  11. 11.📏 How many kilo-ohms (kΩ) is 5100 Ω? =
  12. 12.True or false: the voltmeter is joined across a part. (a) True (b) False
  13. 13.📏 How many amperes (A) is 2080 mA? =
  14. 14.📏 How many amperes (A) is 1330 mA? =
  15. 15.📏 How many amperes (A) is 2920 mA? =
  16. 16.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) power (d) voltage
  17. 17.📏 How many watts (W) is 0.8 kW?
  18. 18.True or false: the ammeter is joined across a part. (a) False (b) True
  19. 19.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
  20. 20.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
  21. 21.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
  22. 22.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
  23. 23.True or false: the ammeter measures voltage. (a) True (b) False
  24. 24.True or false: the voltmeter is joined in series. (a) False (b) True
  25. 25.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) resistance (d) voltage
  26. 26.📏 How many amperes (A) is 1040 mA? =
  27. 27.📏 How many watts (W) is 1.5 kW?
  28. 28.📏 How many amperes (A) is 190 mA? =
  29. 29.📏 How many amperes (A) is 1610 mA? =
  30. 30.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
  31. 31.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
  32. 32.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
  33. 33.📏 How many watts (W) is 4.2 kW?
  34. 34.True or false: voltage is measured in ohms (Ω). (a) True (b) False
  35. 35.📏 How many kilo-ohms (kΩ) is 5000 Ω? =
  36. 36.📏 How many milliamperes (mA) is 2.99 A?
  37. 37.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
  38. 38.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
  39. 39.📏 How many kilowatts (kW) is 1700 W? =
  40. 40.📏 How many ohms (Ω) is 0.9 kΩ?

Answer key

  1. 3.65
  2. True
  3. the water pressure
  4. True
  5. True
  6. voltmeter
  7. True
  8. True
  9. volt (V)
  10. the push of a cell
  11. 5.1
  12. True
  13. 2.08
  14. 1.33
  15. 2.92
  16. power
  17. 800
  18. False
  19. volt (V)
  20. ammeter
  21. ampere (A)
  22. ohm (Ω)
  23. False
  24. False
  25. voltage
  26. 1.04
  27. 1500
  28. 0.19
  29. 1.61
  30. 7.3
  31. the flow of water
  32. ampere (A)
  33. 4200
  34. False
  35. 5
  36. 2990
  37. voltmeter
  38. watt (W)
  39. 1.7
  40. 900

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