Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 560 · 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) is 2.2 A?
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
3. 3.True or false: the push of a cell is measured in watts (W). (a) False (b) True
4. 4.📏 How many amperes (A) is 640 mA? =
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
7. 7.True or false: the voltmeter measures current. (a) False (b) True
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the tap handle (d) the water tank lid
9. 9.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
10. 10.True or false: the ammeter measures voltage. (a) False (b) True
11. 11.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
12. 12.True or false: energy used each second is measured in watts (W). (a) True (b) False
13. 13.📏 How many milliamperes (mA) is 0.6 A?
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
15. 15.📏 How many ohms (Ω) is 9.6 kΩ?
16. 16.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
17. 17.📏 How many kilowatts (kW) is 750 W? =
18. 18.Which of these is measured in watts (W)? (a) voltage (b) power (c) resistance (d) how much a part resists
19. 19.Which of these is measured in volts (V)? (a) voltage (b) current (c) how much a part resists (d) power
20. 20.True or false: the ammeter is joined across a part. (a) False (b) True
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
22. 22.📏 How many watts (W) is 4.6 kW?
23. 23.📏 How many ohms (Ω) is 6 kΩ?
24. 24.True or false: the voltmeter is joined across a part. (a) True (b) False
25. 25.📏 How many ohms (Ω) is 7.4 kΩ?
26. 26.True or false: voltage is measured in watts (W). (a) False (b) True
27. 27.Which of these is measured in volts (V)? (a) current (b) power (c) the flow of charge (d) the push of a cell
28. 28.True or false: power is measured in watts (W). (a) False (b) True
29. 29.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
30. 30.📏 How many milliamperes (mA) is 1.58 A?
31. 31.📏 How many ohms (Ω) is 6.7 kΩ?
32. 32.True or false: the ammeter measures current. (a) True (b) False
33. 33.True or false: the voltmeter is joined in series. (a) True (b) False
34. 34.True or false: the flow of charge is measured in watts (W). (a) True (b) False
35. 35.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
36. 36.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
37. 37.True or false: current is measured in ohms (Ω). (a) True (b) False
38. 38.📏 How many ohms (Ω) is 2 kΩ?
39. 39.True or false: current is measured in volts (V). (a) False (b) True
40. 40.📏 How many watts (W) is 2.1 kW?

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