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Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 166 · 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 voltmeter is joined across a part. (a) False (b) True
  2. 2.True or false: the voltmeter measures voltage. (a) True (b) False
  3. 3.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
  4. 4.True or false: the ammeter measures voltage. (a) True (b) False
  5. 5.📏 How many milliamperes (mA) is 0.67 A?
  6. 6.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
  7. 7.📏 How many ohms (Ω) is 4.8 kΩ?
  8. 8.📏 How many amperes (A) is 370 mA? =
  9. 9.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
  10. 10.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) current (d) voltage
  11. 11.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
  12. 12.📏 How many kilo-ohms (kΩ) is 7000 Ω? =
  13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
  14. 14.📏 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
  15. 15.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
  16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
  17. 17.True or false: the ammeter is joined in series. (a) False (b) True
  18. 18.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
  19. 19.True or false: the voltmeter is joined in series. (a) True (b) False
  20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
  21. 21.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
  22. 22.📏 How many watts (W) is 4.2 kW?
  23. 23.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
  24. 24.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
  25. 25.📏 How many watts (W) is 3 kW?
  26. 26.True or false: the flow of charge is measured in volts (V). (a) True (b) False
  27. 27.True or false: voltage is measured in watts (W). (a) False (b) True
  28. 28.📏 How many watts (W) is 4.7 kW?
  29. 29.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
  30. 30.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
  31. 31.📏 How many ohms (Ω) is 6.8 kΩ?
  32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
  33. 33.📏 How many kilowatts (kW) is 1150 W? =
  34. 34.True or false: current is measured in ohms (Ω). (a) True (b) False
  35. 35.True or false: power is measured in ohms (Ω). (a) False (b) True
  36. 36.True or false: voltage is measured in amperes (A). (a) False (b) True
  37. 37.📏 How many kilowatts (kW) is 650 W? =
  38. 38.📏 How many kilo-ohms (kΩ) is 200 Ω? =
  39. 39.📏 How many kilowatts (kW) is 950 W? =
  40. 40.📏 How many watts (W) is 2.1 kW?

Answer key

  1. True
  2. True
  3. ampere (A)
  4. False
  5. 670
  6. volt (V)
  7. 4800
  8. 0.37
  9. ampere (A)
  10. voltage
  11. 7.3
  12. 7
  13. the water pressure
  14. a narrow pipe
  15. ammeter
  16. 1000
  17. True
  18. watt (W)
  19. False
  20. voltmeter
  21. False
  22. 4200
  23. ohm (Ω)
  24. volt (V)
  25. 3000
  26. False
  27. False
  28. 4700
  29. 4.6
  30. ohm (Ω)
  31. 6800
  32. voltmeter
  33. 1.15
  34. False
  35. False
  36. False
  37. 0.65
  38. 0.2
  39. 0.95
  40. 2100

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