Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 863 · 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 across a part? (a) ammeter (b) voltmeter
2. 2.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
3. 3.📏 How many kilowatts (kW) is 4850 W? =
4. 4.📏 How many watts (W) is 3.8 kW?
5. 5.📏 How many watts (W) is 2.3 kW?
6. 6.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
7. 7.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
8. 8.📏 How many watts (W) is 2.9 kW?
9. 9.True or false: current is measured in watts (W). (a) False (b) True
10. 10.📏 How many amperes (A) is 1660 mA? =
11. 11.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
12. 12.📏 How many watts (W) is 1.4 kW?
13. 13.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
14. 14.📏 How many amperes (A) is 2260 mA? =
15. 15.📏 How many kilowatts (kW) is 500 W? =
16. 16.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) how much a part resists (d) current
17. 17.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) resistance (d) energy used each second
18. 18.True or false: the push of a cell is measured in volts (V). (a) True (b) False
19. 19.True or false: voltage is measured in ohms (Ω). (a) True (b) False
20. 20.📏 How many milliamperes (mA) is 1.37 A?
21. 21.📏 How many ohms (Ω) is 3.4 kΩ?
22. 22.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
23. 23.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
24. 24.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
25. 25.True or false: the voltmeter is joined in series. (a) True (b) False
26. 26.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
27. 27.📏 How many kilowatts (kW) is 3050 W? =
28. 28.True or false: the ammeter is joined across a part. (a) False (b) True
29. 29.📏 How many amperes (A) is 520 mA? =
30. 30.True or false: the voltmeter measures voltage. (a) True (b) False
31. 31.Which of these is measured in volts (V)? (a) current (b) how much a part resists (c) voltage (d) energy used each second
32. 32.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
33. 33.True or false: the ammeter is joined in series. (a) True (b) False
34. 34.True or false: voltage is measured in volts (V). (a) False (b) True
35. 35.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) resistance (d) power
36. 36.📏 How many watts (W) is 4 kW?
37. 37.📏 How many kilowatts (kW) is 2450 W? =
38. 38.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
39. 39.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 100 (d) 10
40. 40.True or false: the voltmeter is joined across a part. (a) False (b) True

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