Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 726 · 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 kilowatts (kW) is 3150 W? =
2. 2.True or false: the ammeter is joined in series. (a) True (b) False
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
4. 4.📏 How many milliamperes (mA) is 1.75 A?
5. 5.📏 How many watts (W) is 2.6 kW?
6. 6.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) the flow of charge (d) the push of a cell
7. 7.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
9. 9.📏 How many watts (W) is 3.2 kW?
10. 10.📏 How many ohms (Ω) is 9.5 kΩ?
11. 11.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
12. 12.True or false: the voltmeter measures voltage. (a) False (b) True
13. 13.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
14. 14.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
15. 15.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
16. 16.True or false: power is measured in amperes (A). (a) True (b) False
17. 17.True or false: the ammeter is joined across a part. (a) False (b) True
18. 18.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
19. 19.True or false: voltage is measured in volts (V). (a) False (b) True
20. 20.Which of these is measured in amperes (A)? (a) the flow of charge (b) the push of a cell (c) energy used each second (d) power
21. 21.📏 How many amperes (A) is 1540 mA? =
22. 22.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
23. 23.📏 How many amperes (A) is 2610 mA? =
24. 24.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
25. 25.Which of these is measured in watts (W)? (a) voltage (b) current (c) resistance (d) energy used each second
26. 26.📏 How many amperes (A) is 1580 mA? =
27. 27.True or false: power is measured in volts (V). (a) False (b) True
28. 28.📏 How many kilo-ohms (kΩ) is 3000 Ω? =
29. 29.True or false: the push of a cell is measured in volts (V). (a) False (b) True
30. 30.📏 How many ohms (Ω) is 5.8 kΩ?
31. 31.📏 How many watts (W) is 1.2 kW?
32. 32.True or false: current is measured in amperes (A). (a) False (b) True
33. 33.📏 How many milliamperes (mA) is 0.3 A?
34. 34.📏 How many amperes (A) is 1920 mA? =
35. 35.📏 How many amperes (A) is 1090 mA? =
36. 36.True or false: power is measured in watts (W). (a) False (b) True
37. 37.📏 How many kilowatts (kW) is 3000 W? =
38. 38.True or false: the voltmeter is joined across a part. (a) True (b) False
39. 39.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) voltage (d) power
40. 40.📏 How many amperes (A) is 40 mA? =

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