Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 716 · 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 amperes (A) is 2040 mA? =
2. 2.True or false: resistance is measured in ohms (Ω). (a) False (b) True
3. 3.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) energy used each second (d) current
4. 4.True or false: current is measured in volts (V). (a) False (b) True
5. 5.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) power (d) the push of a cell
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
7. 7.Which of these is measured in ohms (Ω)? (a) power (b) the flow of charge (c) how much a part resists (d) current
8. 8.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
9. 9.📏 How many amperes (A) is 280 mA? =
10. 10.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) energy used each second (d) the push of a cell
11. 11.True or false: energy used each second is measured in amperes (A). (a) True (b) False
12. 12.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) the push of a cell
13. 13.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
14. 14.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
15. 15.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
16. 16.📏 How many watts (W) is 2.2 kW?
17. 17.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
18. 18.📏 How many ohms (Ω) is 2.3 kΩ?
19. 19.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the water pressure (d) the flow of water
20. 20.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
23. 23.📏 How many milliamperes (mA) is 0.33 A?
24. 24.True or false: the voltmeter is joined in series. (a) True (b) False
25. 25.True or false: the ammeter measures voltage. (a) True (b) False
26. 26.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) the flow of charge (d) resistance
27. 27.True or false: voltage is measured in amperes (A). (a) False (b) True
28. 28.True or false: the ammeter measures current. (a) False (b) True
29. 29.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
30. 30.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
31. 31.📏 How many amperes (A) is 1880 mA? =
32. 32.True or false: current is measured in amperes (A). (a) False (b) True
33. 33.True or false: the flow of charge is measured in volts (V). (a) False (b) True
34. 34.True or false: the voltmeter is joined across a part. (a) True (b) False
35. 35.📏 How many amperes (A) is 720 mA? =
36. 36.True or false: the ammeter is joined in series. (a) True (b) False
37. 37.True or false: the voltmeter measures voltage. (a) False (b) True
38. 38.📏 How many milliamperes (mA) is 1.75 A?
39. 39.📏 How many amperes (A) is 2500 mA? =
40. 40.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True

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