Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 668 · 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 of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) how much a part resists (d) energy used each second
2. 2.📏 How many amperes (A) is 760 mA? =
3. 3.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) power (c) current (d) how much a part resists
4. 4.📏 How many amperes (A) is 1530 mA? =
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
6. 6.True or false: energy used each second is measured in volts (V). (a) True (b) False
7. 7.📏 How many milliamperes (mA) is 1.62 A?
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
9. 9.True or false: the voltmeter measures voltage. (a) True (b) False
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
11. 11.True or false: the voltmeter measures current. (a) True (b) False
12. 12.True or false: the ammeter is joined in series. (a) True (b) False
13. 13.True or false: the ammeter measures voltage. (a) False (b) True
14. 14.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
15. 15.📏 How many kilowatts (kW) is 1900 W? =
16. 16.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
17. 17.📏 How many watts (W) is 4.8 kW?
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
19. 19.📏 How many milliamperes (mA) is 0.76 A?
20. 20.📏 How many kilowatts (kW) is 3300 W? =
21. 21.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
22. 22.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
23. 23.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
24. 24.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
25. 25.📏 How many watts (W) is 3.6 kW?
26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
27. 27.📏 How many amperes (A) is 2310 mA? =
28. 28.📏 How many milliamperes (mA) is 0.54 A?
29. 29.📏 How many kilowatts (kW) is 2600 W? =
30. 30.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
31. 31.True or false: energy used each second is measured in watts (W). (a) False (b) True
32. 32.True or false: the voltmeter is joined across a part. (a) False (b) True
33. 33.True or false: the voltmeter is joined in series. (a) True (b) False
34. 34.📏 How many amperes (A) is 2820 mA? =
35. 35.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) the push of a cell (d) current
36. 36.True or false: current is measured in amperes (A). (a) True (b) False
37. 37.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
38. 38.Which of these is measured in watts (W)? (a) power (b) how much a part resists (c) current (d) the flow of charge
39. 39.📏 How many ohms (Ω) is 1.4 kΩ?
40. 40.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) the push of a cell (d) resistance

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