Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 806 · 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 power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
2. 2.📏 How many amperes (A) is 2600 mA? =
3. 3.📏 How many amperes (A) is 2060 mA? =
4. 4.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
5. 5.📏 How many watts (W) is 2.8 kW?
6. 6.📏 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
7. 7.True or false: voltage is measured in volts (V). (a) True (b) False
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
9. 9.True or false: the voltmeter measures current. (a) True (b) False
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
11. 11.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) the flow of charge (d) power
12. 12.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
13. 13.📏 How many watts (W) is 4 kW?
14. 14.True or false: power is measured in amperes (A). (a) False (b) True
15. 15.📏 How many kilowatts (kW) is 2000 W? =
16. 16.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
17. 17.Which of these is measured in volts (V)? (a) current (b) power (c) resistance (d) voltage
18. 18.📏 How many milliamperes (mA) is 2.33 A?
19. 19.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
20. 20.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
21. 21.📏 How many watts (W) is 1.6 kW?
22. 22.📏 How many amperes (A) is 1830 mA? =
23. 23.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
24. 24.📏 How many kilowatts (kW) is 5000 W? =
25. 25.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
26. 26.True or false: the ammeter is joined in series. (a) True (b) False
27. 27.True or false: the ammeter measures current. (a) False (b) True
28. 28.📏 How many watts (W) is 4.9 kW?
29. 29.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
30. 30.📏 How many ohms (Ω) is 3 kΩ?
31. 31.📏 How many amperes (A) is 1190 mA? =
32. 32.True or false: energy used each second is measured in watts (W). (a) False (b) True
33. 33.Which of these is measured in volts (V)? (a) the flow of charge (b) power (c) the push of a cell (d) energy used each second
34. 34.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
35. 35.📏 How many kilowatts (kW) is 4850 W? =
36. 36.📏 How many watts (W) is 3.3 kW?
37. 37.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
38. 38.True or false: the flow of charge is measured in volts (V). (a) True (b) False
39. 39.Which of these is measured in ohms (Ω)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) voltage
40. 40.📏 How many kilowatts (kW) is 1000 W? =

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