Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 830 · 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.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
3. 3.📏 How many amperes (A) is 20 mA? =
4. 4.📏 How many ohms (Ω) is 2 kΩ?
5. 5.True or false: how much a part resists is measured in volts (V). (a) False (b) True
6. 6.📏 How many watts (W) is 3.3 kW?
7. 7.📏 How many kilowatts (kW) is 3550 W? =
8. 8.True or false: current is measured in volts (V). (a) True (b) False
9. 9.True or false: the voltmeter measures current. (a) False (b) True
10. 10.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) power (d) voltage
11. 11.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
12. 12.True or false: current is measured in watts (W). (a) False (b) True
13. 13.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
14. 14.True or false: the voltmeter measures voltage. (a) False (b) True
15. 15.📏 How many milliamperes (mA) is 2.9 A?
16. 16.📏 How many kilowatts (kW) is 4400 W? =
17. 17.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
18. 18.True or false: how much a part resists is measured in watts (W). (a) False (b) True
19. 19.📏 How many watts (W) is 3.5 kW?
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
22. 22.True or false: the voltmeter is joined across a part. (a) True (b) False
23. 23.True or false: the ammeter is joined across a part. (a) False (b) True
24. 24.📏 How many kilowatts (kW) is 2600 W? =
25. 25.📏 How many watts (W) is 2.8 kW?
26. 26.📏 How many ohms (Ω) is 7 kΩ?
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
28. 28.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
29. 29.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) how much a part resists (c) current (d) the push of a cell
30. 30.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
31. 31.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
32. 32.📏 How many ohms (Ω) is 4 kΩ?
33. 33.True or false: the voltmeter is joined in series. (a) True (b) False
34. 34.📏 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
35. 35.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
36. 36.True or false: voltage is measured in ohms (Ω). (a) True (b) False
37. 37.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) power (d) the flow of charge
38. 38.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
39. 39.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) the flow of charge (d) how much a part resists
40. 40.True or false: the ammeter is joined in series. (a) False (b) True

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