Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 384 · 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) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
2. 2.📏 How many amperes (A) is 2410 mA? =
3. 3.📏 How many watts (W) is 3.8 kW?
4. 4.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
5. 5.📏 How many watts (W) is 0.9 kW?
6. 6.True or false: the push of a cell is measured in watts (W). (a) True (b) False
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.📏 How many amperes (A) is 1440 mA? =
9. 9.📏 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
10. 10.📏 How many ohms (Ω) is 2 kΩ?
11. 11.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
12. 12.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
13. 13.📏 How many milliamperes (mA) is 1.64 A?
14. 14.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
15. 15.📏 How many watts (W) is 2.3 kW?
16. 16.Which of these is measured in watts (W)? (a) power (b) resistance (c) how much a part resists (d) the push of a cell
17. 17.True or false: voltage is measured in watts (W). (a) True (b) False
18. 18.📏 How many ohms (Ω) is 0.2 kΩ?
19. 19.True or false: the voltmeter is joined in series. (a) True (b) False
20. 20.True or false: the push of a cell is measured in volts (V). (a) False (b) True
21. 21.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) the push of a cell (d) the flow of charge
22. 22.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
23. 23.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
24. 24.True or false: how much a part resists is measured in volts (V). (a) True (b) False
25. 25.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
26. 26.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
27. 27.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) the push of a cell (d) current
28. 28.True or false: the ammeter is joined in series. (a) True (b) False
29. 29.True or false: the voltmeter measures voltage. (a) False (b) True
30. 30.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
31. 31.📏 How many amperes (A) is 190 mA? =
32. 32.True or false: power is measured in watts (W). (a) True (b) False
33. 33.True or false: voltage is measured in amperes (A). (a) False (b) True
34. 34.True or false: resistance is measured in volts (V). (a) True (b) False
35. 35.True or false: the voltmeter is joined across a part. (a) False (b) True
36. 36.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) the flow of charge (d) the push of a cell
37. 37.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) resistance (d) voltage
38. 38.📏 How many milliamperes (mA) is 1.69 A?
39. 39.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
40. 40.📏 How many ohms (Ω) is 1 kΩ?

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