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Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 847 · 40 questions
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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.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
  2. 2.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
  3. 3.📏 How many kilowatts (kW) is 650 W? =
  4. 4.True or false: the voltmeter measures voltage. (a) False (b) True
  5. 5.📏 How many milliamperes (mA) is 0.68 A?
  6. 6.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) current (d) the push of a cell
  7. 7.True or false: the ammeter measures voltage. (a) True (b) False
  8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
  9. 9.True or false: the push of a cell is measured in watts (W). (a) False (b) True
  10. 10.📏 How many watts (W) is 0.5 kW?
  11. 11.True or false: the voltmeter is joined across a part. (a) True (b) False
  12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
  13. 13.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
  14. 14.📏 How many kilo-ohms (kΩ) is 7400 Ω? =
  15. 15.📏 How many amperes (A) is 1310 mA? =
  16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
  17. 17.📏 How many ohms (Ω) is 7.4 kΩ?
  18. 18.True or false: the ammeter is joined across a part. (a) False (b) True
  19. 19.📏 How many milliamperes (mA) is 1.55 A?
  20. 20.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
  21. 21.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
  22. 22.📏 How many milliamperes (mA) is 2.02 A?
  23. 23.📏 How many watts (W) is 0.6 kW?
  24. 24.Which of these is measured in volts (V)? (a) voltage (b) current (c) resistance (d) power
  25. 25.📏 How many watts (W) is 1.8 kW?
  26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
  27. 27.📏 How many ohms (Ω) is 0.6 kΩ?
  28. 28.📏 How many kilo-ohms (kΩ) is 4500 Ω? =
  29. 29.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
  30. 30.📏 How many watts (W) is 2.8 kW?
  31. 31.📏 How many watts (W) is 2.7 kW?
  32. 32.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) current (d) power
  33. 33.📏 How many milliamperes (mA) is 0.07 A?
  34. 34.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) voltage (d) resistance
  35. 35.📏 How many amperes (A) is 2850 mA? =
  36. 36.True or false: power is measured in volts (V). (a) True (b) False
  37. 37.True or false: the ammeter measures current. (a) True (b) False
  38. 38.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
  39. 39.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) energy used each second (c) current (d) how much a part resists
  40. 40.📏 How many watts (W) is 0.7 kW?

Answer key

  1. volt (V)
  2. watt (W)
  3. 0.65
  4. True
  5. 680
  6. current
  7. False
  8. ammeter
  9. False
  10. 500
  11. True
  12. the water pressure
  13. 6.1
  14. 7.4
  15. 1.31
  16. 1000
  17. 7400
  18. False
  19. 1550
  20. the flow of water
  21. ohm (Ω)
  22. 2020
  23. 600
  24. voltage
  25. 1800
  26. 1000
  27. 600
  28. 4.5
  29. ampere (A)
  30. 2800
  31. 2700
  32. power
  33. 70
  34. resistance
  35. 2.85
  36. False
  37. True
  38. voltmeter
  39. how much a part resists
  40. 700

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