Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 524 · 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.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
2. 2.Which of these is measured in amperes (A)? (a) how much a part resists (b) the push of a cell (c) current (d) voltage
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
4. 4.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
5. 5.📏 How many kilowatts (kW) is 4050 W? =
6. 6.True or false: current is measured in watts (W). (a) False (b) True
7. 7.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
9. 9.True or false: the voltmeter measures current. (a) True (b) False
10. 10.True or false: the ammeter is joined in series. (a) True (b) False
11. 11.Which of these is measured in amperes (A)? (a) the flow of charge (b) how much a part resists (c) resistance (d) the push of a cell
12. 12.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
13. 13.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
14. 14.📏 How many ohms (Ω) is 1.3 kΩ?
15. 15.True or false: the ammeter is joined across a part. (a) False (b) True
16. 16.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
18. 18.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
19. 19.True or false: the ammeter measures current. (a) True (b) False
20. 20.True or false: power is measured in ohms (Ω). (a) False (b) True
21. 21.📏 How many amperes (A) is 380 mA? =
22. 22.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) how much a part resists (d) energy used each second
23. 23.📏 How many milliamperes (mA) is 2.85 A?
24. 24.📏 How many milliamperes (mA) is 0.07 A?
25. 25.📏 How many milliamperes (mA) is 0.62 A?
26. 26.📏 How many milliamperes (mA) is 2.45 A?
27. 27.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
28. 28.📏 How many watts (W) is 2.8 kW?
29. 29.📏 How many milliamperes (mA) is 2.63 A?
30. 30.True or false: the ammeter measures voltage. (a) False (b) True
31. 31.True or false: power is measured in watts (W). (a) True (b) False
32. 32.True or false: the voltmeter measures voltage. (a) False (b) True
33. 33.True or false: resistance is measured in ohms (Ω). (a) False (b) True
34. 34.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) the flow of charge (d) power
35. 35.📏 How many kilowatts (kW) is 1750 W? =
36. 36.True or false: resistance is measured in watts (W). (a) True (b) False
37. 37.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
38. 38.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
39. 39.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
40. 40.📏 How many watts (W) is 1.1 kW?

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