Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 242 · 40 questions

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.

1. 1.True or false: resistance is measured in ohms (Ω). (a) True (b) False
2. 2.True or false: the flow of charge is measured in volts (V). (a) False (b) True
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
4. 4.📏 How many milliamperes (mA) is 2.9 A?
5. 5.True or false: the ammeter is joined across a part. (a) False (b) True
6. 6.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) the flow of charge (d) energy used each second
7. 7.📏 How many ohms (Ω) is 4.8 kΩ?
8. 8.📏 How many ohms (Ω) is 4.1 kΩ?
9. 9.📏 How many kilowatts (kW) is 450 W? =
10. 10.Which of these is measured in ohms (Ω)? (a) power (b) energy used each second (c) the flow of charge (d) how much a part resists
11. 11.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
12. 12.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
13. 13.True or false: the voltmeter is joined in series. (a) True (b) False
14. 14.📏 How many ohms (Ω) is 8.2 kΩ?
15. 15.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
16. 16.📏 How many watts (W) is 4.8 kW?
17. 17.📏 How many amperes (A) is 2780 mA? =
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 10 (d) 100
19. 19.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
20. 20.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
21. 21.📏 How many amperes (A) is 1790 mA? =
22. 22.📏 How many ohms (Ω) is 7.2 kΩ?
23. 23.True or false: the flow of charge is measured in watts (W). (a) False (b) True
24. 24.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) a bigger tank (d) the flow of water
26. 26.True or false: how much a part resists is measured in volts (V). (a) False (b) True
27. 27.Which of these is measured in volts (V)? (a) power (b) resistance (c) current (d) voltage
28. 28.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) the push of a cell (d) current
29. 29.📏 How many milliamperes (mA) is 0.72 A?
30. 30.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
31. 31.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
32. 32.Which of these is measured in amperes (A)? (a) current (b) how much a part resists (c) the push of a cell (d) voltage
33. 33.📏 How many watts (W) is 4.1 kW?
34. 34.📏 How many ohms (Ω) is 6.1 kΩ?
35. 35.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
36. 36.📏 How many ohms (Ω) is 5.7 kΩ?
37. 37.📏 How many milliamperes (mA) is 0.63 A?
38. 38.📏 How many kilowatts (kW) is 1650 W? =
39. 39.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
40. 40.📏 How many milliamperes (mA) is 2.82 A?

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