Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 380 · 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 milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 1000 (d) 10
2. 2.True or false: the ammeter is joined across a part. (a) False (b) True
3. 3.📏 How many amperes (A) is 2380 mA? =
4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
5. 5.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) how much a part resists (d) power
6. 6.📏 How many kilowatts (kW) is 1750 W? =
7. 7.True or false: the voltmeter is joined across a part. (a) True (b) False
8. 8.True or false: energy used each second is measured in watts (W). (a) False (b) True
9. 9.True or false: power is measured in ohms (Ω). (a) True (b) False
10. 10.📏 How many milliamperes (mA) is 1.6 A?
11. 11.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
12. 12.📏 How many amperes (A) is 50 mA? =
13. 13.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
14. 14.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
15. 15.📏 How many ohms (Ω) is 5.8 kΩ?
16. 16.📏 How many milliamperes (mA) is 2.61 A?
17. 17.True or false: power is measured in volts (V). (a) False (b) True
18. 18.📏 How many ohms (Ω) is 8.6 kΩ?
19. 19.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) current (d) the push of a cell
20. 20.📏 How many watts (W) is 4.1 kW?
21. 21.📏 How many milliamperes (mA) is 2.59 A?
22. 22.True or false: the push of a cell is measured in volts (V). (a) False (b) True
23. 23.📏 How many milliamperes (mA) is 1.05 A?
24. 24.True or false: the ammeter measures current. (a) True (b) False
25. 25.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
26. 26.📏 How many milliamperes (mA) is 1.65 A?
27. 27.📏 How many watts (W) is 0.6 kW?
28. 28.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
29. 29.📏 How many milliamperes (mA) is 0.85 A?
30. 30.True or false: the voltmeter is joined in series. (a) True (b) False
31. 31.📏 How many amperes (A) is 410 mA? =
32. 32.Which of these is measured in ohms (Ω)? (a) voltage (b) the push of a cell (c) resistance (d) current
33. 33.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
34. 34.True or false: the ammeter is joined in series. (a) False (b) True
35. 35.Which of these is measured in watts (W)? (a) resistance (b) energy used each second (c) voltage (d) current
36. 36.True or false: the voltmeter measures current. (a) False (b) True
37. 37.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
38. 38.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
39. 39.True or false: the ammeter measures voltage. (a) False (b) True
40. 40.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)

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