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Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 48 · 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.True or false: the ammeter is joined across a part. (a) True (b) False
  2. 2.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
  3. 3.📏 How many ohms (Ω) is 2.5 kΩ?
  4. 4.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
  5. 5.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
  6. 6.True or false: how much a part resists is measured in volts (V). (a) True (b) False
  7. 7.Which of these is measured in volts (V)? (a) power (b) energy used each second (c) the flow of charge (d) voltage
  8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
  9. 9.True or false: energy used each second is measured in watts (W). (a) True (b) False
  10. 10.Which of these is measured in volts (V)? (a) the flow of charge (b) the push of a cell (c) resistance (d) how much a part resists
  11. 11.📏 How many ohms (Ω) is 8.1 kΩ?
  12. 12.📏 How many ohms (Ω) is 0.8 kΩ?
  13. 13.📏 How many kilowatts (kW) is 1850 W? =
  14. 14.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
  15. 15.📏 How many kilowatts (kW) is 3250 W? =
  16. 16.📏 How many kilo-ohms (kΩ) is 6400 Ω? =
  17. 17.True or false: power is measured in ohms (Ω). (a) True (b) False
  18. 18.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
  19. 19.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
  20. 20.📏 How many ohms (Ω) is 9 kΩ?
  21. 21.📏 How many milliamperes (mA) is 2.66 A?
  22. 22.📏 How many amperes (A) is 660 mA? =
  23. 23.📏 How many milliamperes (mA) is 2.76 A?
  24. 24.📏 How many ohms (Ω) is 7.9 kΩ?
  25. 25.True or false: voltage is measured in ohms (Ω). (a) False (b) True
  26. 26.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) the push of a cell (d) resistance
  27. 27.True or false: the push of a cell is measured in volts (V). (a) False (b) True
  28. 28.📏 How many kilowatts (kW) is 3700 W? =
  29. 29.True or false: the voltmeter measures voltage. (a) False (b) True
  30. 30.📏 How many kilowatts (kW) is 2750 W? =
  31. 31.📏 How many amperes (A) is 2310 mA? =
  32. 32.📏 How many milliamperes (mA) is 1.02 A?
  33. 33.True or false: the ammeter measures current. (a) True (b) False
  34. 34.True or false: power is measured in volts (V). (a) True (b) False
  35. 35.📏 How many watts (W) is 5 kW?
  36. 36.📏 How many amperes (A) is 720 mA? =
  37. 37.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the pipe colour (d) the tap handle
  38. 38.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
  39. 39.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
  40. 40.📏 How many watts (W) is 4 kW?

Answer key

  1. False
  2. watt (W)
  3. 2500
  4. ampere (A)
  5. ohm (Ω)
  6. False
  7. voltage
  8. a narrow pipe
  9. True
  10. the push of a cell
  11. 8100
  12. 800
  13. 1.85
  14. 1000
  15. 3.25
  16. 6.4
  17. False
  18. ammeter
  19. the flow of water
  20. 9000
  21. 2660
  22. 0.66
  23. 2760
  24. 7900
  25. False
  26. resistance
  27. True
  28. 3.7
  29. True
  30. 2.75
  31. 2.31
  32. 1020
  33. True
  34. False
  35. 5000
  36. 0.72
  37. the water pressure
  38. ohm (Ω)
  39. voltmeter
  40. 4000

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