Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 254 · 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: the voltmeter measures voltage. (a) False (b) True
2. 2.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
3. 3.True or false: the ammeter measures voltage. (a) True (b) False
4. 4.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
5. 5.📏 How many kilowatts (kW) is 4200 W? =
6. 6.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) voltage (d) power
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
9. 9.Which of these is measured in volts (V)? (a) current (b) resistance (c) the push of a cell (d) how much a part resists
10. 10.📏 How many milliamperes (mA) is 1.66 A?
11. 11.True or false: the push of a cell is measured in volts (V). (a) False (b) True
12. 12.📏 How many ohms (Ω) is 8.8 kΩ?
13. 13.True or false: the ammeter is joined across a part. (a) True (b) False
14. 14.📏 How many amperes (A) is 340 mA? =
15. 15.True or false: the ammeter is joined in series. (a) False (b) True
16. 16.True or false: power is measured in volts (V). (a) True (b) False
17. 17.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
18. 18.True or false: the voltmeter is joined across a part. (a) True (b) False
19. 19.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) power (d) the flow of charge
20. 20.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
21. 21.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
22. 22.Which of these is measured in watts (W)? (a) the push of a cell (b) the flow of charge (c) energy used each second (d) how much a part resists
23. 23.📏 How many amperes (A) is 880 mA? =
24. 24.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
25. 25.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
26. 26.📏 How many watts (W) is 3.3 kW?
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
28. 28.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
29. 29.True or false: energy used each second is measured in watts (W). (a) True (b) False
30. 30.True or false: current is measured in watts (W). (a) False (b) True
31. 31.📏 How many amperes (A) is 1790 mA? =
32. 32.📏 How many amperes (A) is 2740 mA? =
33. 33.True or false: resistance is measured in ohms (Ω). (a) False (b) True
34. 34.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
35. 35.True or false: resistance is measured in watts (W). (a) False (b) True
36. 36.True or false: voltage is measured in amperes (A). (a) False (b) True
37. 37.📏 How many ohms (Ω) is 6.8 kΩ?
38. 38.📏 How many ohms (Ω) is 2.1 kΩ?
39. 39.True or false: power is measured in amperes (A). (a) False (b) True
40. 40.True or false: the flow of charge is measured in amperes (A). (a) False (b) True

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