Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 843 · 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.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
3. 3.📏 How many ohms (Ω) is 2.2 kΩ?
4. 4.📏 How many milliamperes (mA) is 2.23 A?
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
6. 6.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
7. 7.True or false: voltage is measured in watts (W). (a) True (b) False
8. 8.📏 How many ohms (Ω) is 5.3 kΩ?
9. 9.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
10. 10.📏 How many ohms (Ω) is 8.4 kΩ?
11. 11.📏 How many ohms (Ω) is 8.3 kΩ?
12. 12.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
13. 13.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) resistance (d) how much a part resists
14. 14.📏 How many amperes (A) is 660 mA? =
15. 15.True or false: resistance is measured in ohms (Ω). (a) True (b) False
16. 16.True or false: power is measured in watts (W). (a) True (b) False
17. 17.True or false: the ammeter measures voltage. (a) True (b) False
18. 18.📏 How many amperes (A) is 680 mA? =
19. 19.True or false: the voltmeter is joined across a part. (a) False (b) True
20. 20.Which of these is measured in volts (V)? (a) current (b) how much a part resists (c) energy used each second (d) the push of a cell
21. 21.True or false: the ammeter is joined across a part. (a) True (b) False
22. 22.📏 How many watts (W) is 1.9 kW?
23. 23.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) the flow of charge
24. 24.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
25. 25.📏 How many amperes (A) is 350 mA? =
26. 26.📏 How many watts (W) is 2.6 kW?
27. 27.📏 How many kilo-ohms (kΩ) is 3500 Ω? =
28. 28.True or false: the voltmeter is joined in series. (a) True (b) False
29. 29.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
30. 30.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) a narrow pipe (d) the flow of water
31. 31.📏 How many milliamperes (mA) is 2.22 A?
32. 32.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) voltage (d) the flow of charge
33. 33.📏 How many amperes (A) is 1910 mA? =
34. 34.📏 How many amperes (A) is 2480 mA? =
35. 35.📏 How many kilowatts (kW) is 2800 W? =
36. 36.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
37. 37.📏 How many amperes (A) is 2390 mA? =
38. 38.True or false: power is measured in amperes (A). (a) True (b) False
39. 39.True or false: the voltmeter measures voltage. (a) False (b) True
40. 40.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10

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