← Voltage, current and resistance lesson New set →

Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 505 · 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.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
  2. 2.📏 How many milliamperes (mA) is 2.03 A?
  3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
  4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
  5. 5.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
  6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
  7. 7.True or false: the voltmeter measures current. (a) False (b) True
  8. 8.📏 How many ohms (Ω) is 4.2 kΩ?
  9. 9.📏 How many kilo-ohms (kΩ) is 3200 Ω? =
  10. 10.True or false: power is measured in volts (V). (a) False (b) True
  11. 11.📏 How many amperes (A) is 2770 mA? =
  12. 12.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
  13. 13.📏 How many kilowatts (kW) is 3400 W? =
  14. 14.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) resistance (d) the flow of charge
  15. 15.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
  16. 16.📏 How many milliamperes (mA) is 0.2 A?
  17. 17.True or false: how much a part resists is measured in watts (W). (a) True (b) False
  18. 18.📏 How many kilo-ohms (kΩ) is 800 Ω? =
  19. 19.📏 How many milliamperes (mA) is 0.58 A?
  20. 20.📏 How many ohms (Ω) is 6.8 kΩ?
  21. 21.True or false: the voltmeter measures voltage. (a) False (b) True
  22. 22.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) the flow of charge (d) resistance
  23. 23.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
  24. 24.📏 How many amperes (A) is 140 mA? =
  25. 25.📏 How many watts (W) is 3.2 kW?
  26. 26.📏 How many watts (W) is 5 kW?
  27. 27.📏 How many kilowatts (kW) is 3900 W? =
  28. 28.True or false: current is measured in ohms (Ω). (a) True (b) False
  29. 29.📏 How many watts (W) is 4.6 kW?
  30. 30.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
  31. 31.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
  32. 32.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
  33. 33.📏 How many watts (W) is 4.4 kW?
  34. 34.📏 How many watts (W) is 1.4 kW?
  35. 35.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
  36. 36.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
  37. 37.📏 How many kilowatts (kW) is 4150 W? =
  38. 38.Which of these is measured in amperes (A)? (a) the push of a cell (b) energy used each second (c) current (d) how much a part resists
  39. 39.📏 How many ohms (Ω) is 7.7 kΩ?
  40. 40.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter

Answer key

  1. volt (V)
  2. 2030
  3. voltmeter
  4. ammeter
  5. 1000
  6. 1000
  7. False
  8. 4200
  9. 3.2
  10. False
  11. 2.77
  12. ampere (A)
  13. 3.4
  14. energy used each second
  15. 2.6
  16. 200
  17. False
  18. 0.8
  19. 580
  20. 6800
  21. True
  22. the flow of charge
  23. ohm (Ω)
  24. 0.14
  25. 3200
  26. 5000
  27. 3.9
  28. False
  29. 4600
  30. volt (V)
  31. a narrow pipe
  32. False
  33. 4400
  34. 1400
  35. the flow of water
  36. ampere (A)
  37. 4.15
  38. current
  39. 7700
  40. ammeter

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids