Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 338 · 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 voltage. (a) False (b) True
2. 2.True or false: current is measured in amperes (A). (a) False (b) True
3. 3.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) how much a part resists (d) power
4. 4.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
5. 5.True or false: the voltmeter is joined in series. (a) False (b) True
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
7. 7.True or false: the voltmeter measures current. (a) False (b) True
8. 8.📏 How many amperes (A) is 1640 mA? =
9. 9.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) energy used each second (d) current
10. 10.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
11. 11.📏 How many kilowatts (kW) is 3950 W? =
12. 12.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
13. 13.📏 How many milliamperes (mA) is 2.28 A?
14. 14.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
15. 15.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
16. 16.True or false: resistance is measured in ohms (Ω). (a) True (b) False
17. 17.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
18. 18.True or false: the ammeter is joined in series. (a) False (b) True
19. 19.True or false: the ammeter is joined across a part. (a) False (b) True
20. 20.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
21. 21.📏 How many ohms (Ω) is 9.6 kΩ?
22. 22.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
23. 23.📏 How many milliamperes (mA) is 1.71 A?
24. 24.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) power (d) how much a part resists
25. 25.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) how much a part resists (d) the flow of charge
26. 26.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
27. 27.📏 How many watts (W) is 2.6 kW?
28. 28.📏 How many ohms (Ω) is 7.9 kΩ?
29. 29.📏 How many kilowatts (kW) is 2000 W? =
30. 30.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
31. 31.True or false: the voltmeter measures voltage. (a) True (b) False
32. 32.True or false: the ammeter measures current. (a) False (b) True
33. 33.📏 How many milliamperes (mA) is 1.97 A?
34. 34.📏 How many milliamperes (mA) is 0.37 A?
35. 35.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
36. 36.Which of these is measured in ohms (Ω)? (a) power (b) current (c) how much a part resists (d) energy used each second
37. 37.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
38. 38.📏 How many watts (W) is 2.9 kW?
39. 39.📏 How many ohms (Ω) is 7.1 kΩ?
40. 40.📏 How many watts (W) is 0.4 kW?

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