Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 662 · 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.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
2. 2.True or false: how much a part resists is measured in volts (V). (a) True (b) False
3. 3.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
6. 6.📏 How many kilowatts (kW) is 400 W? =
7. 7.📏 How many amperes (A) is 2950 mA? =
8. 8.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
9. 9.True or false: the voltmeter measures current. (a) False (b) True
10. 10.Which of these is measured in volts (V)? (a) current (b) how much a part resists (c) the push of a cell (d) power
11. 11.📏 How many kilowatts (kW) is 2400 W? =
12. 12.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
13. 13.📏 How many watts (W) is 4 kW?
14. 14.True or false: the ammeter is joined in series. (a) False (b) True
15. 15.True or false: the ammeter is joined across a part. (a) False (b) True
16. 16.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
17. 17.📏 How many watts (W) is 1.2 kW?
18. 18.True or false: energy used each second is measured in volts (V). (a) True (b) False
19. 19.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
20. 20.True or false: voltage is measured in amperes (A). (a) True (b) False
21. 21.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
22. 22.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) how much a part resists (d) current
23. 23.True or false: the flow of charge is measured in volts (V). (a) False (b) True
24. 24.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) how much a part resists (d) resistance
25. 25.📏 How many amperes (A) is 1220 mA? =
26. 26.True or false: the voltmeter is joined across a part. (a) True (b) False
27. 27.📏 How many watts (W) is 2.5 kW?
28. 28.📏 How many watts (W) is 0.6 kW?
29. 29.📏 How many kilowatts (kW) is 750 W? =
30. 30.True or false: the voltmeter is joined in series. (a) False (b) True
31. 31.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
32. 32.📏 How many ohms (Ω) is 3.6 kΩ?
33. 33.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) the push of a cell (d) how much a part resists
34. 34.📏 How many ohms (Ω) is 1.3 kΩ?
35. 35.📏 How many ohms (Ω) is 5.2 kΩ?
36. 36.True or false: voltage is measured in ohms (Ω). (a) False (b) True
37. 37.📏 How many amperes (A) is 510 mA? =
38. 38.True or false: current is measured in watts (W). (a) True (b) False
39. 39.📏 How many kilowatts (kW) is 1900 W? =
40. 40.📏 How many kilo-ohms (kΩ) is 900 Ω? =

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