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Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 850 · 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 4200 W? =
  2. 2.📏 How many milliamperes (mA) is 2.84 A?
  3. 3.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
  4. 4.📏 How many watts (W) is 4.4 kW?
  5. 5.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
  6. 6.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
  7. 7.📏 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
  8. 8.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
  9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
  10. 10.📏 How many ohms (Ω) is 0.4 kΩ?
  11. 11.📏 How many ohms (Ω) is 4.5 kΩ?
  12. 12.True or false: the ammeter measures voltage. (a) True (b) False
  13. 13.True or false: the ammeter is joined across a part. (a) False (b) True
  14. 14.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
  15. 15.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
  16. 16.True or false: voltage is measured in ohms (Ω). (a) False (b) True
  17. 17.📏 How many kilo-ohms (kΩ) is 9100 Ω? =
  18. 18.Which of these is measured in amperes (A)? (a) the push of a cell (b) power (c) current (d) voltage
  19. 19.True or false: the voltmeter measures voltage. (a) False (b) True
  20. 20.📏 How many amperes (A) is 480 mA? =
  21. 21.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
  22. 22.📏 How many kilowatts (kW) is 1550 W? =
  23. 23.📏 How many watts (W) is 4.8 kW?
  24. 24.📏 How many ohms (Ω) is 6.1 kΩ?
  25. 25.Which of these is measured in watts (W)? (a) energy used each second (b) resistance (c) the push of a cell (d) voltage
  26. 26.📏 How many watts (W) is 3.6 kW?
  27. 27.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
  28. 28.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
  29. 29.📏 How many kilo-ohms (kΩ) is 5100 Ω? =
  30. 30.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
  31. 31.True or false: the voltmeter is joined across a part. (a) False (b) True
  32. 32.True or false: the ammeter is joined in series. (a) False (b) True
  33. 33.True or false: current is measured in volts (V). (a) False (b) True
  34. 34.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) voltage (d) current
  35. 35.📏 How many kilo-ohms (kΩ) is 4300 Ω? =
  36. 36.📏 How many amperes (A) is 1390 mA? =
  37. 37.📏 How many kilowatts (kW) is 2350 W? =
  38. 38.📏 How many ohms (Ω) is 9.6 kΩ?
  39. 39.📏 How many ohms (Ω) is 3.5 kΩ?
  40. 40.True or false: the push of a cell is measured in volts (V). (a) False (b) True

Answer key

  1. 4.2
  2. 2840
  3. ohm (Ω)
  4. 4400
  5. ohm (Ω)
  6. watt (W)
  7. the flow of water
  8. True
  9. ammeter
  10. 400
  11. 4500
  12. False
  13. False
  14. ammeter
  15. ampere (A)
  16. False
  17. 9.1
  18. current
  19. True
  20. 0.48
  21. volt (V)
  22. 1.55
  23. 4800
  24. 6100
  25. energy used each second
  26. 3600
  27. the water pressure
  28. ampere (A)
  29. 5.1
  30. voltmeter
  31. True
  32. True
  33. False
  34. power
  35. 4.3
  36. 1.39
  37. 2.35
  38. 9600
  39. 3500
  40. True

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