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Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 993 · 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.

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  1. 1.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
  2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
  3. 3.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
  4. 4.Which of these is measured in watts (W)? (a) voltage (b) current (c) resistance (d) power
  5. 5.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
  6. 6.True or false: the voltmeter is joined in series. (a) False (b) True
  7. 7.True or false: the flow of charge is measured in volts (V). (a) True (b) False
  8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
  9. 9.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
  10. 10.📏 How many kilo-ohms (kΩ) is 1100 Ω? =
  11. 11.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) the flow of charge (d) how much a part resists
  12. 12.📏 How many ohms (Ω) is 4.4 kΩ?
  13. 13.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
  14. 14.True or false: the voltmeter measures current. (a) False (b) True
  15. 15.📏 How many kilo-ohms (kΩ) is 7100 Ω? =
  16. 16.📏 How many milliamperes (mA) is 1.47 A?
  17. 17.Which of these is measured in watts (W)? (a) current (b) how much a part resists (c) energy used each second (d) the flow of charge
  18. 18.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
  19. 19.True or false: the ammeter measures current. (a) False (b) True
  20. 20.📏 How many kilowatts (kW) is 3100 W? =
  21. 21.📏 How many milliamperes (mA) is 1.56 A?
  22. 22.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
  23. 23.📏 How many amperes (A) is 220 mA? =
  24. 24.True or false: power is measured in amperes (A). (a) True (b) False
  25. 25.📏 How many watts (W) is 0.8 kW?
  26. 26.True or false: current is measured in watts (W). (a) False (b) True
  27. 27.📏 How many ohms (Ω) is 6.9 kΩ?
  28. 28.📏 How many amperes (A) is 270 mA? =
  29. 29.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
  30. 30.📏 How many amperes (A) is 1300 mA? =
  31. 31.📏 How many watts (W) is 0.2 kW?
  32. 32.📏 How many amperes (A) is 1660 mA? =
  33. 33.True or false: the voltmeter is joined across a part. (a) False (b) True
  34. 34.📏 How many watts (W) is 4.2 kW?
  35. 35.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
  36. 36.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
  37. 37.True or false: the voltmeter measures voltage. (a) True (b) False
  38. 38.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the flow of charge (c) resistance (d) power
  39. 39.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
  40. 40.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)

Answer key

  1. ohm (Ω)
  2. a narrow pipe
  3. True
  4. power
  5. volt (V)
  6. False
  7. False
  8. ammeter
  9. 2.6
  10. 1.1
  11. how much a part resists
  12. 4400
  13. watt (W)
  14. False
  15. 7.1
  16. 1470
  17. energy used each second
  18. 3.3
  19. True
  20. 3.1
  21. 1560
  22. 1000
  23. 0.22
  24. False
  25. 800
  26. False
  27. 6900
  28. 0.27
  29. True
  30. 1.3
  31. 200
  32. 1.66
  33. True
  34. 4200
  35. volt (V)
  36. 1000
  37. True
  38. resistance
  39. ammeter
  40. watt (W)

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