Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 814 · 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 volts (V)? (a) energy used each second (b) current (c) voltage (d) how much a part resists
2. 2.True or false: voltage is measured in volts (V). (a) False (b) True
3. 3.📏 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
4. 4.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
5. 5.True or false: the ammeter measures voltage. (a) True (b) False
6. 6.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) the push of a cell (d) the flow of charge
7. 7.📏 How many amperes (A) is 2280 mA? =
8. 8.True or false: the push of a cell is measured in volts (V). (a) True (b) False
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
10. 10.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
11. 11.True or false: the ammeter measures current. (a) True (b) False
12. 12.📏 How many amperes (A) is 2530 mA? =
13. 13.True or false: the voltmeter measures current. (a) False (b) True
14. 14.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
15. 15.True or false: the voltmeter is joined across a part. (a) False (b) True
16. 16.True or false: voltage is measured in amperes (A). (a) True (b) False
17. 17.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
19. 19.📏 How many amperes (A) is 540 mA? =
20. 20.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
21. 21.📏 How many kilowatts (kW) is 450 W? =
22. 22.True or false: the voltmeter measures voltage. (a) False (b) True
23. 23.True or false: the ammeter is joined across a part. (a) True (b) False
24. 24.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) power (d) resistance
25. 25.True or false: the ammeter is joined in series. (a) False (b) True
26. 26.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
27. 27.📏 How many ohms (Ω) is 5 kΩ?
28. 28.📏 How many kilowatts (kW) is 800 W? =
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
30. 30.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
31. 31.True or false: power is measured in watts (W). (a) True (b) False
32. 32.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
33. 33.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
34. 34.True or false: voltage is measured in watts (W). (a) True (b) False
35. 35.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
36. 36.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
37. 37.📏 How many ohms (Ω) is 7.1 kΩ?
38. 38.True or false: resistance is measured in ohms (Ω). (a) False (b) True
39. 39.📏 How many amperes (A) is 10 mA? =
40. 40.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) voltage (d) how much a part resists

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