Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 157 · 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.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
2. 2.True or false: the voltmeter is joined across a part. (a) False (b) True
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
4. 4.Which of these is measured in volts (V)? (a) the flow of charge (b) power (c) voltage (d) how much a part resists
5. 5.True or false: energy used each second is measured in watts (W). (a) False (b) True
6. 6.True or false: the ammeter measures current. (a) True (b) False
7. 7.📏 How many milliamperes (mA) is 1.53 A?
8. 8.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
9. 9.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
10. 10.True or false: the voltmeter measures current. (a) False (b) True
11. 11.True or false: voltage is measured in volts (V). (a) True (b) False
12. 12.Which of these is measured in amperes (A)? (a) how much a part resists (b) resistance (c) current (d) the push of a cell
13. 13.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
14. 14.📏 How many watts (W) is 2.2 kW?
15. 15.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) current (d) the push of a cell
16. 16.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
17. 17.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
18. 18.📏 How many milliamperes (mA) is 0.27 A?
19. 19.📏 How many milliamperes (mA) is 1.45 A?
20. 20.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
21. 21.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
22. 22.True or false: the voltmeter measures voltage. (a) False (b) True
23. 23.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
24. 24.True or false: resistance is measured in watts (W). (a) False (b) True
25. 25.True or false: the ammeter is joined in series. (a) True (b) False
26. 26.📏 How many watts (W) is 1.8 kW?
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
28. 28.📏 How many ohms (Ω) is 1 kΩ?
29. 29.True or false: the ammeter is joined across a part. (a) True (b) False
30. 30.Which of these is measured in watts (W)? (a) how much a part resists (b) the push of a cell (c) current (d) energy used each second
31. 31.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
32. 32.📏 How many amperes (A) is 2830 mA? =
33. 33.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
34. 34.True or false: how much a part resists is measured in volts (V). (a) True (b) False
35. 35.Which of these is measured in watts (W)? (a) the flow of charge (b) voltage (c) power (d) the push of a cell
36. 36.True or false: the flow of charge is measured in watts (W). (a) False (b) True
37. 37.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
38. 38.True or false: resistance is measured in ohms (Ω). (a) False (b) True
39. 39.True or false: the ammeter measures voltage. (a) False (b) True
40. 40.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)

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