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Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 617 · 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 amperes (A) is 1480 mA? =
  2. 2.📏 How many amperes (A) is 550 mA? =
  3. 3.📏 How many watts (W) is 3.2 kW?
  4. 4.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
  5. 5.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) resistance (d) the flow of charge
  6. 6.True or false: the flow of charge is measured in volts (V). (a) True (b) False
  7. 7.True or false: resistance is measured in ohms (Ω). (a) False (b) True
  8. 8.True or false: the ammeter measures current. (a) True (b) False
  9. 9.📏 How many watts (W) is 0.3 kW?
  10. 10.📏 How many amperes (A) is 880 mA? =
  11. 11.📏 How many amperes (A) is 2490 mA? =
  12. 12.📏 How many kilowatts (kW) is 4000 W? =
  13. 13.True or false: the ammeter measures voltage. (a) False (b) True
  14. 14.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) how much a part resists (d) energy used each second
  15. 15.📏 How many kilo-ohms (kΩ) is 3000 Ω? =
  16. 16.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the pipe colour (d) the water tank lid
  17. 17.📏 How many ohms (Ω) is 5.9 kΩ?
  18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
  19. 19.📏 How many milliamperes (mA) is 0.3 A?
  20. 20.📏 How many ohms (Ω) is 3.8 kΩ?
  21. 21.True or false: the voltmeter measures current. (a) False (b) True
  22. 22.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
  23. 23.📏 How many watts (W) is 1.8 kW?
  24. 24.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
  25. 25.📏 How many milliamperes (mA) is 2.81 A?
  26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
  27. 27.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
  28. 28.📏 How many ohms (Ω) is 7.7 kΩ?
  29. 29.True or false: current is measured in ohms (Ω). (a) False (b) True
  30. 30.True or false: the ammeter is joined across a part. (a) False (b) True
  31. 31.True or false: the voltmeter is joined across a part. (a) False (b) True
  32. 32.📏 How many amperes (A) is 1130 mA? =
  33. 33.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
  34. 34.True or false: current is measured in volts (V). (a) False (b) True
  35. 35.📏 How many watts (W) is 1.2 kW?
  36. 36.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
  37. 37.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
  38. 38.📏 How many watts (W) is 1.4 kW?
  39. 39.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
  40. 40.📏 How many watts (W) is 4.6 kW?

Answer key

  1. 1.48
  2. 0.55
  3. 3200
  4. ampere (A)
  5. resistance
  6. False
  7. True
  8. True
  9. 300
  10. 0.88
  11. 2.49
  12. 4
  13. False
  14. the push of a cell
  15. 3
  16. the water pressure
  17. 5900
  18. voltmeter
  19. 300
  20. 3800
  21. False
  22. 1000
  23. 1800
  24. a narrow pipe
  25. 2810
  26. ammeter
  27. True
  28. 7700
  29. False
  30. False
  31. True
  32. 1.13
  33. False
  34. False
  35. 1200
  36. ohm (Ω)
  37. True
  38. 1400
  39. watt (W)
  40. 4600

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