Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 743 · 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 watts (W) is 2.8 kW?
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
3. 3.📏 How many milliamperes (mA) is 1.86 A?
4. 4.📏 How many ohms (Ω) is 6 kΩ?
5. 5.📏 How many milliamperes (mA) is 1.29 A?
6. 6.True or false: energy used each second is measured in watts (W). (a) True (b) False
7. 7.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) power (c) the push of a cell (d) resistance
8. 8.Which of these is measured in amperes (A)? (a) voltage (b) power (c) the flow of charge (d) the push of a cell
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
12. 12.Which of these is measured in volts (V)? (a) resistance (b) current (c) power (d) voltage
13. 13.True or false: the voltmeter measures voltage. (a) True (b) False
14. 14.📏 How many milliamperes (mA) is 0.83 A?
15. 15.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
16. 16.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) energy used each second (d) current
17. 17.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
18. 18.📏 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
19. 19.Which of these is measured in ohms (Ω)? (a) energy used each second (b) how much a part resists (c) voltage (d) the push of a cell
20. 20.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
21. 21.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
22. 22.True or false: the voltmeter measures current. (a) True (b) False
23. 23.True or false: the voltmeter is joined across a part. (a) True (b) False
24. 24.True or false: the ammeter is joined in series. (a) False (b) True
25. 25.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
26. 26.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
27. 27.📏 How many watts (W) is 1.1 kW?
28. 28.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
29. 29.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
30. 30.True or false: the voltmeter is joined in series. (a) False (b) True
31. 31.📏 How many amperes (A) is 390 mA? =
32. 32.📏 How many amperes (A) is 240 mA? =
33. 33.True or false: voltage is measured in watts (W). (a) False (b) True
34. 34.📏 How many milliamperes (mA) is 2.72 A?
35. 35.True or false: voltage is measured in volts (V). (a) True (b) False
36. 36.📏 How many ohms (Ω) is 8.1 kΩ?
37. 37.📏 How many milliamperes (mA) is 1.38 A?
38. 38.Which of these is measured in watts (W)? (a) energy used each second (b) resistance (c) voltage (d) the flow of charge
39. 39.True or false: the flow of charge is measured in volts (V). (a) False (b) True
40. 40.📏 How many ohms (Ω) is 3 kΩ?

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