Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 117 · 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 ohms (Ω) is 3.4 kΩ?
2. 2.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
3. 3.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
4. 4.📏 How many amperes (A) is 850 mA? =
5. 5.True or false: the voltmeter measures current. (a) True (b) False
6. 6.📏 How many ohms (Ω) is 6.8 kΩ?
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
8. 8.True or false: the ammeter is joined in series. (a) True (b) False
9. 9.True or false: voltage is measured in volts (V). (a) False (b) True
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
12. 12.📏 How many milliamperes (mA) is 0.26 A?
13. 13.📏 How many milliamperes (mA) is 0.44 A?
14. 14.📏 How many milliamperes (mA) is 2.72 A?
15. 15.📏 How many amperes (A) is 1390 mA? =
16. 16.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
17. 17.📏 How many watts (W) is 2 kW?
18. 18.True or false: how much a part resists is measured in volts (V). (a) True (b) False
19. 19.True or false: power is measured in ohms (Ω). (a) True (b) False
20. 20.True or false: current is measured in volts (V). (a) True (b) False
21. 21.True or false: how much a part resists is measured in watts (W). (a) False (b) True
22. 22.True or false: power is measured in volts (V). (a) False (b) True
23. 23.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
24. 24.True or false: the voltmeter is joined in series. (a) False (b) True
25. 25.📏 How many watts (W) is 4.2 kW?
26. 26.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
27. 27.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) voltage (d) resistance
28. 28.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) energy used each second (d) the push of a cell
29. 29.True or false: the voltmeter measures voltage. (a) False (b) True
30. 30.True or false: the ammeter measures voltage. (a) True (b) False
31. 31.📏 How many amperes (A) is 650 mA? =
32. 32.📏 How many watts (W) is 0.8 kW?
33. 33.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
34. 34.📏 How many watts (W) is 0.5 kW?
35. 35.True or false: energy used each second is measured in watts (W). (a) True (b) False
36. 36.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
37. 37.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
38. 38.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) how much a part resists (d) power
39. 39.📏 How many watts (W) is 1.5 kW?
40. 40.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)

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