Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 124 · 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: the ammeter is joined in series. (a) False (b) True
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
3. 3.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
4. 4.True or false: the voltmeter is joined across a part. (a) False (b) True
5. 5.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
6. 6.📏 How many amperes (A) is 2990 mA? =
7. 7.📏 How many amperes (A) is 900 mA? =
8. 8.True or false: the flow of charge is measured in watts (W). (a) True (b) False
9. 9.True or false: voltage is measured in amperes (A). (a) False (b) True
10. 10.📏 How many watts (W) is 3.2 kW?
11. 11.True or false: the ammeter measures voltage. (a) True (b) False
12. 12.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
13. 13.📏 How many milliamperes (mA) is 0.46 A?
14. 14.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
15. 15.True or false: current is measured in amperes (A). (a) True (b) False
16. 16.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
17. 17.True or false: the ammeter is joined across a part. (a) True (b) False
18. 18.📏 How many kilowatts (kW) is 200 W? =
19. 19.📏 How many milliamperes (mA) is 1.97 A?
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
21. 21.📏 How many amperes (A) is 910 mA? =
22. 22.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
23. 23.True or false: voltage is measured in watts (W). (a) False (b) True
24. 24.📏 How many ohms (Ω) is 1.2 kΩ?
25. 25.📏 How many watts (W) is 4.4 kW?
26. 26.Which of these is measured in volts (V)? (a) power (b) how much a part resists (c) resistance (d) voltage
27. 27.True or false: resistance is measured in ohms (Ω). (a) True (b) False
28. 28.📏 How many watts (W) is 0.1 kW?
29. 29.True or false: the voltmeter measures voltage. (a) True (b) False
30. 30.📏 How many amperes (A) is 1880 mA? =
31. 31.True or false: the voltmeter measures current. (a) False (b) True
32. 32.📏 How many kilowatts (kW) is 600 W? =
33. 33.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
34. 34.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) the push of a cell (d) power
35. 35.📏 How many ohms (Ω) is 4.7 kΩ?
36. 36.True or false: the ammeter measures current. (a) True (b) False
37. 37.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
38. 38.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) current (d) how much a part resists
39. 39.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
40. 40.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter

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