Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 742 · 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.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
2. 2.Which of these is measured in volts (V)? (a) resistance (b) current (c) the flow of charge (d) the push of a cell
3. 3.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
4. 4.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) the flow of charge (d) current
5. 5.📏 How many kilowatts (kW) is 4200 W? =
6. 6.📏 How many ohms (Ω) is 0.8 kΩ?
7. 7.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
8. 8.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
9. 9.True or false: the voltmeter measures current. (a) True (b) False
10. 10.📏 How many milliamperes (mA) is 0.47 A?
11. 11.📏 How many ohms (Ω) is 4.8 kΩ?
12. 12.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) current (d) energy used each second
13. 13.📏 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
14. 14.True or false: the voltmeter is joined in series. (a) True (b) False
15. 15.📏 How many watts (W) is 3.1 kW?
16. 16.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
17. 17.📏 How many ohms (Ω) is 3.6 kΩ?
18. 18.True or false: resistance is measured in ohms (Ω). (a) True (b) False
19. 19.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
20. 20.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
21. 21.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
22. 22.True or false: the ammeter is joined in series. (a) False (b) True
23. 23.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
24. 24.Which of these is measured in amperes (A)? (a) how much a part resists (b) voltage (c) power (d) the flow of charge
25. 25.True or false: power is measured in watts (W). (a) False (b) True
26. 26.True or false: resistance is measured in volts (V). (a) True (b) False
27. 27.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
28. 28.True or false: the voltmeter is joined across a part. (a) False (b) True
29. 29.📏 How many kilowatts (kW) is 250 W? =
30. 30.True or false: power is measured in amperes (A). (a) True (b) False
31. 31.True or false: current is measured in watts (W). (a) True (b) False
32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
33. 33.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the push of a cell (c) the flow of charge (d) energy used each second
34. 34.📏 How many amperes (A) is 560 mA? =
35. 35.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
36. 36.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) power (c) resistance (d) voltage
37. 37.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
38. 38.📏 How many kilowatts (kW) is 1650 W? =
39. 39.📏 How many ohms (Ω) is 7.5 kΩ?
40. 40.📏 How many watts (W) is 3.9 kW?

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