Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 99 · 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 power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
2. 2.📏 How many ohms (Ω) is 8.5 kΩ?
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
4. 4.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) the flow of charge (d) voltage
5. 5.True or false: the voltmeter measures current. (a) True (b) False
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
7. 7.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
8. 8.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) voltage (d) power
9. 9.📏 How many amperes (A) is 2540 mA? =
10. 10.📏 How many milliamperes (mA) is 0.41 A?
11. 11.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
12. 12.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
13. 13.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) power (d) the push of a cell
14. 14.Which of these is measured in amperes (A)? (a) power (b) resistance (c) energy used each second (d) current
15. 15.📏 How many ohms (Ω) is 0.6 kΩ?
16. 16.📏 How many ohms (Ω) is 4.4 kΩ?
17. 17.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
18. 18.True or false: the ammeter is joined across a part. (a) False (b) True
19. 19.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
21. 21.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
22. 22.📏 How many amperes (A) is 220 mA? =
23. 23.📏 How many watts (W) is 2.4 kW?
24. 24.True or false: the ammeter measures voltage. (a) False (b) True
25. 25.📏 How many ohms (Ω) is 0.1 kΩ?
26. 26.📏 How many amperes (A) is 690 mA? =
27. 27.True or false: the push of a cell is measured in volts (V). (a) True (b) False
28. 28.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
29. 29.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
30. 30.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
31. 31.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
32. 32.True or false: the voltmeter measures voltage. (a) False (b) True
33. 33.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
34. 34.📏 How many amperes (A) is 350 mA? =
35. 35.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
36. 36.📏 How many kilowatts (kW) is 2100 W? =
37. 37.📏 How many kilowatts (kW) is 450 W? =
38. 38.True or false: the voltmeter is joined in series. (a) True (b) False
39. 39.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) a narrow pipe (d) the water pressure
40. 40.📏 How many amperes (A) is 1400 mA? =

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