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Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 756 · 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 350 W? =
  2. 2.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
  3. 3.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
  4. 4.📏 How many milliamperes (mA) is 1.03 A?
  5. 5.📏 How many kilo-ohms (kΩ) is 500 Ω? =
  6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
  7. 7.📏 How many milliamperes (mA) is 1.41 A?
  8. 8.True or false: the ammeter is joined across a part. (a) False (b) True
  9. 9.Which of these is measured in amperes (A)? (a) current (b) power (c) energy used each second (d) voltage
  10. 10.📏 How many watts (W) is 0.2 kW?
  11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
  12. 12.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
  13. 13.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
  14. 14.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) voltage (d) resistance
  15. 15.📏 How many kilowatts (kW) is 700 W? =
  16. 16.True or false: the push of a cell is measured in volts (V). (a) True (b) False
  17. 17.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) power (d) current
  18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
  19. 19.📏 How many milliamperes (mA) is 1.73 A?
  20. 20.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
  21. 21.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) the push of a cell (d) the flow of charge
  22. 22.📏 How many amperes (A) is 840 mA? =
  23. 23.📏 How many milliamperes (mA) is 0.23 A?
  24. 24.True or false: the ammeter measures current. (a) True (b) False
  25. 25.📏 How many milliamperes (mA) is 2.58 A?
  26. 26.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
  27. 27.📏 How many watts (W) is 0.4 kW?
  28. 28.📏 How many watts (W) is 2.8 kW?
  29. 29.📏 How many kilo-ohms (kΩ) is 3800 Ω? =
  30. 30.True or false: current is measured in amperes (A). (a) True (b) False
  31. 31.📏 How many amperes (A) is 160 mA? =
  32. 32.True or false: the voltmeter is joined in series. (a) True (b) False
  33. 33.True or false: voltage is measured in watts (W). (a) True (b) False
  34. 34.📏 How many kilowatts (kW) is 2750 W? =
  35. 35.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
  36. 36.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
  37. 37.📏 How many ohms (Ω) is 7.2 kΩ?
  38. 38.📏 How many ohms (Ω) is 9.4 kΩ?
  39. 39.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
  40. 40.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 1000 (d) 10

Answer key

  1. 0.35
  2. ohm (Ω)
  3. ohm (Ω)
  4. 1030
  5. 0.5
  6. voltmeter
  7. 1410
  8. False
  9. current
  10. 200
  11. voltmeter
  12. ampere (A)
  13. ampere (A)
  14. voltage
  15. 0.7
  16. True
  17. resistance
  18. a narrow pipe
  19. 1730
  20. ammeter
  21. the flow of charge
  22. 0.84
  23. 230
  24. True
  25. 2580
  26. 1.4
  27. 400
  28. 2800
  29. 3.8
  30. True
  31. 0.16
  32. False
  33. False
  34. 2.75
  35. 1000
  36. watt (W)
  37. 7200
  38. 9400
  39. True
  40. 1000

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