Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 943 · 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 5.1 kΩ?
2. 2.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
3. 3.📏 How many watts (W) is 3.5 kW?
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
5. 5.📏 How many kilowatts (kW) is 850 W? =
6. 6.True or false: resistance is measured in watts (W). (a) True (b) False
7. 7.📏 How many amperes (A) is 1080 mA? =
8. 8.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
9. 9.📏 How many ohms (Ω) is 2.4 kΩ?
10. 10.📏 How many watts (W) is 4.4 kW?
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
12. 12.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
13. 13.Which of these is measured in volts (V)? (a) the push of a cell (b) the flow of charge (c) energy used each second (d) how much a part resists
14. 14.True or false: voltage is measured in volts (V). (a) False (b) True
15. 15.Which of these is measured in watts (W)? (a) power (b) the flow of charge (c) the push of a cell (d) resistance
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
17. 17.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
18. 18.📏 How many ohms (Ω) is 7.5 kΩ?
19. 19.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
20. 20.📏 How many kilo-ohms (kΩ) is 3600 Ω? =
21. 21.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
22. 22.True or false: resistance is measured in amperes (A). (a) False (b) True
23. 23.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
24. 24.📏 How many ohms (Ω) is 7.3 kΩ?
25. 25.True or false: the ammeter measures current. (a) False (b) True
26. 26.📏 How many kilowatts (kW) is 2250 W? =
27. 27.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) current (d) energy used each second
28. 28.True or false: the voltmeter is joined in series. (a) False (b) True
29. 29.📏 How many kilo-ohms (kΩ) is 5800 Ω? =
30. 30.True or false: the ammeter is joined in series. (a) True (b) False
31. 31.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
32. 32.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
33. 33.📏 How many milliamperes (mA) is 2.41 A?
34. 34.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
35. 35.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
36. 36.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
37. 37.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) energy used each second (c) resistance (d) the push of a cell
38. 38.📏 How many milliamperes (mA) is 0.71 A?
39. 39.True or false: the push of a cell is measured in volts (V). (a) True (b) False
40. 40.📏 How many amperes (A) is 1050 mA? =

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