Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 877 · 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: voltage is measured in watts (W). (a) True (b) False
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
3. 3.📏 How many kilowatts (kW) is 350 W? =
4. 4.True or false: voltage is measured in ohms (Ω). (a) True (b) False
5. 5.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
6. 6.📏 How many kilowatts (kW) is 2650 W? =
7. 7.📏 How many watts (W) is 2.2 kW?
8. 8.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
9. 9.📏 How many milliamperes (mA) is 2.96 A?
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
11. 11.Which of these is measured in amperes (A)? (a) the flow of charge (b) the push of a cell (c) voltage (d) resistance
12. 12.📏 How many amperes (A) is 1430 mA? =
13. 13.📏 How many kilowatts (kW) is 2050 W? =
14. 14.📏 How many watts (W) is 1.5 kW?
15. 15.📏 How many amperes (A) is 1310 mA? =
16. 16.📏 How many milliamperes (mA) is 2.64 A?
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
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 3.4 kW?
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
21. 21.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
22. 22.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
23. 23.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
24. 24.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
25. 25.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
26. 26.True or false: the ammeter is joined in series. (a) True (b) False
27. 27.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
28. 28.True or false: voltage is measured in volts (V). (a) True (b) False
29. 29.True or false: the flow of charge is measured in volts (V). (a) True (b) False
30. 30.📏 How many watts (W) is 3.5 kW?
31. 31.📏 How many kilowatts (kW) is 4350 W? =
32. 32.True or false: the voltmeter measures voltage. (a) False (b) True
33. 33.📏 How many amperes (A) is 870 mA? =
34. 34.True or false: how much a part resists is measured in watts (W). (a) False (b) True
35. 35.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
36. 36.True or false: current is measured in amperes (A). (a) True (b) False
37. 37.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) voltage (d) current
38. 38.📏 How many amperes (A) is 1520 mA? =
39. 39.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
40. 40.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False

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