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Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 450 · 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 ohms (Ω) is 7 kΩ?
  2. 2.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) current (d) how much a part resists
  3. 3.📏 How many amperes (A) is 2660 mA? =
  4. 4.True or false: the voltmeter measures current. (a) False (b) True
  5. 5.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
  6. 6.📏 How many amperes (A) is 1250 mA? =
  7. 7.True or false: the ammeter measures voltage. (a) False (b) True
  8. 8.True or false: voltage is measured in ohms (Ω). (a) False (b) True
  9. 9.True or false: the push of a cell is measured in volts (V). (a) True (b) False
  10. 10.True or false: power is measured in ohms (Ω). (a) True (b) False
  11. 11.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
  12. 12.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
  13. 13.True or false: the ammeter measures current. (a) False (b) True
  14. 14.📏 How many milliamperes (mA) is 1.26 A?
  15. 15.True or false: voltage is measured in amperes (A). (a) False (b) True
  16. 16.📏 How many kilo-ohms (kΩ) is 9100 Ω? =
  17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
  18. 18.True or false: energy used each second is measured in watts (W). (a) False (b) True
  19. 19.📏 How many watts (W) is 1.6 kW?
  20. 20.True or false: the voltmeter measures voltage. (a) True (b) False
  21. 21.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
  22. 22.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
  23. 23.📏 How many kilowatts (kW) is 2600 W? =
  24. 24.📏 How many amperes (A) is 1240 mA? =
  25. 25.📏 How many amperes (A) is 1960 mA? =
  26. 26.📏 How many ohms (Ω) is 2.8 kΩ?
  27. 27.📏 How many amperes (A) is 680 mA? =
  28. 28.True or false: voltage is measured in volts (V). (a) False (b) True
  29. 29.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
  30. 30.📏 How many kilo-ohms (kΩ) is 7500 Ω? =
  31. 31.True or false: power is measured in watts (W). (a) True (b) False
  32. 32.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
  33. 33.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) energy used each second (d) resistance
  34. 34.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
  35. 35.📏 How many watts (W) is 2.7 kW?
  36. 36.📏 How many milliamperes (mA) is 2.26 A?
  37. 37.📏 How many kilowatts (kW) is 950 W? =
  38. 38.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
  39. 39.True or false: the voltmeter is joined in series. (a) False (b) True
  40. 40.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle

Answer key

  1. 7000
  2. how much a part resists
  3. 2.66
  4. False
  5. ammeter
  6. 1.25
  7. False
  8. False
  9. True
  10. False
  11. ampere (A)
  12. voltmeter
  13. True
  14. 1260
  15. False
  16. 9.1
  17. 1000
  18. True
  19. 1600
  20. True
  21. False
  22. volt (V)
  23. 2.6
  24. 1.24
  25. 1.96
  26. 2800
  27. 0.68
  28. True
  29. ohm (Ω)
  30. 7.5
  31. True
  32. voltmeter
  33. resistance
  34. the flow of water
  35. 2700
  36. 2260
  37. 0.95
  38. True
  39. False
  40. the water pressure

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