Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 600 · 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.True or false: the ammeter measures current. (a) True (b) False
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
3. 3.📏 How many milliamperes (mA) is 2.46 A?
4. 4.📏 How many milliamperes (mA) is 2.37 A?
5. 5.📏 How many amperes (A) is 2060 mA? =
6. 6.📏 How many amperes (A) is 1830 mA? =
7. 7.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
8. 8.True or false: the ammeter measures voltage. (a) False (b) True
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
10. 10.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
11. 11.True or false: the ammeter is joined across a part. (a) True (b) False
12. 12.📏 How many amperes (A) is 420 mA? =
13. 13.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
14. 14.📏 How many milliamperes (mA) is 0.37 A?
15. 15.True or false: the voltmeter measures voltage. (a) False (b) True
16. 16.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) power (c) current (d) how much a part resists
17. 17.Which of these is measured in volts (V)? (a) current (b) voltage (c) resistance (d) the flow of charge
18. 18.Which of these is measured in ohms (Ω)? (a) resistance (b) power (c) voltage (d) the flow of charge
19. 19.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) power (d) how much a part resists
20. 20.📏 How many kilowatts (kW) is 4350 W? =
21. 21.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
22. 22.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) voltage (d) current
23. 23.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
24. 24.True or false: resistance is measured in volts (V). (a) False (b) True
25. 25.📏 How many watts (W) is 3.2 kW?
26. 26.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
27. 27.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
28. 28.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
29. 29.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
30. 30.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 10 (d) 100
31. 31.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
32. 32.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
33. 33.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
34. 34.📏 How many amperes (A) is 1590 mA? =
35. 35.📏 How many kilowatts (kW) is 2700 W? =
36. 36.📏 How many milliamperes (mA) is 2.41 A?
37. 37.📏 How many watts (W) is 1.9 kW?
38. 38.📏 How many kilowatts (kW) is 600 W? =
39. 39.True or false: the push of a cell is measured in volts (V). (a) True (b) False
40. 40.True or false: current is measured in amperes (A). (a) True (b) False

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