Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 128 · 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.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
2. 2.Which of these is measured in ohms (Ω)? (a) resistance (b) voltage (c) current (d) energy used each second
3. 3.True or false: the voltmeter is joined across a part. (a) False (b) True
4. 4.True or false: resistance is measured in watts (W). (a) False (b) True
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
6. 6.📏 How many kilowatts (kW) is 5000 W? =
7. 7.True or false: voltage is measured in ohms (Ω). (a) True (b) False
8. 8.True or false: the ammeter is joined across a part. (a) False (b) True
9. 9.True or false: the voltmeter is joined in series. (a) True (b) False
10. 10.Which of these is measured in amperes (A)? (a) how much a part resists (b) power (c) the flow of charge (d) voltage
11. 11.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
12. 12.📏 How many milliamperes (mA) is 2.76 A?
13. 13.📏 How many milliamperes (mA) is 0.97 A?
14. 14.True or false: energy used each second is measured in volts (V). (a) True (b) False
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
16. 16.📏 How many ohms (Ω) is 2.4 kΩ?
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
18. 18.True or false: the ammeter is joined in series. (a) False (b) True
19. 19.📏 How many milliamperes (mA) is 1.11 A?
20. 20.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
21. 21.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 10 (d) 100
22. 22.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) the flow of charge (d) resistance
23. 23.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
24. 24.📏 How many watts (W) is 2.7 kW?
25. 25.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
26. 26.True or false: the voltmeter measures voltage. (a) True (b) False
27. 27.True or false: resistance is measured in volts (V). (a) True (b) False
28. 28.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) power (d) how much a part resists
29. 29.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) how much a part resists (d) the push of a cell
30. 30.📏 How many amperes (A) is 480 mA? =
31. 31.True or false: the voltmeter measures current. (a) True (b) False
32. 32.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
33. 33.📏 How many kilowatts (kW) is 1200 W? =
34. 34.True or false: voltage is measured in amperes (A). (a) True (b) False
35. 35.📏 How many kilowatts (kW) is 2600 W? =
36. 36.📏 How many amperes (A) is 50 mA? =
37. 37.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
38. 38.📏 How many watts (W) is 4.5 kW?
39. 39.True or false: the push of a cell is measured in watts (W). (a) True (b) False
40. 40.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter

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