Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 579 · 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.True or false: resistance is measured in watts (W). (a) True (b) False
2. 2.📏 How many watts (W) is 1.2 kW?
3. 3.📏 How many amperes (A) is 470 mA? =
4. 4.📏 How many milliamperes (mA) is 2.94 A?
5. 5.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
6. 6.True or false: the ammeter is joined in series. (a) False (b) True
7. 7.True or false: the ammeter measures voltage. (a) False (b) True
8. 8.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) power (d) resistance
9. 9.Which of these is measured in watts (W)? (a) energy used each second (b) resistance (c) current (d) the push of a cell
10. 10.📏 How many milliamperes (mA) is 1.6 A?
11. 11.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
13. 13.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) how much a part resists (d) the push of a cell
14. 14.True or false: current is measured in amperes (A). (a) False (b) True
15. 15.True or false: resistance is measured in ohms (Ω). (a) True (b) False
16. 16.True or false: power is measured in amperes (A). (a) False (b) True
17. 17.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
18. 18.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
19. 19.📏 How many amperes (A) is 2150 mA? =
20. 20.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
21. 21.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
22. 22.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) how much a part resists (d) voltage
23. 23.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
24. 24.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
25. 25.📏 How many watts (W) is 0.1 kW?
26. 26.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
27. 27.📏 How many milliamperes (mA) is 2.18 A?
28. 28.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
29. 29.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
30. 30.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
31. 31.True or false: the voltmeter measures current. (a) True (b) False
32. 32.📏 How many amperes (A) is 1550 mA? =
33. 33.📏 How many milliamperes (mA) is 1.39 A?
34. 34.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
35. 35.True or false: the ammeter measures current. (a) False (b) True
36. 36.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
37. 37.📏 How many ohms (Ω) is 4.7 kΩ?
38. 38.True or false: the ammeter is joined across a part. (a) True (b) False
39. 39.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
40. 40.True or false: voltage is measured in volts (V). (a) True (b) False

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