Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 923 · 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.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
2. 2.Which of these is measured in watts (W)? (a) resistance (b) energy used each second (c) current (d) the flow of charge
3. 3.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
4. 4.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
5. 5.Which of these is measured in amperes (A)? (a) current (b) resistance (c) voltage (d) how much a part resists
6. 6.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
7. 7.📏 How many amperes (A) is 720 mA? =
8. 8.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
9. 9.📏 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
10. 10.True or false: resistance is measured in amperes (A). (a) False (b) True
11. 11.📏 How many ohms (Ω) is 7.8 kΩ?
12. 12.Which of these is measured in ohms (Ω)? (a) power (b) the push of a cell (c) how much a part resists (d) current
13. 13.📏 How many amperes (A) is 660 mA? =
14. 14.True or false: power is measured in volts (V). (a) True (b) False
15. 15.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
16. 16.📏 How many kilowatts (kW) is 1400 W? =
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
18. 18.True or false: the voltmeter measures current. (a) True (b) False
19. 19.📏 How many milliamperes (mA) is 0.06 A?
20. 20.📏 How many milliamperes (mA) is 0.87 A?
21. 21.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
22. 22.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
23. 23.True or false: the voltmeter is joined in series. (a) True (b) False
24. 24.True or false: the ammeter is joined in series. (a) False (b) True
25. 25.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) resistance (d) power
26. 26.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
27. 27.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
28. 28.📏 How many milliamperes (mA) is 0.41 A?
29. 29.True or false: the voltmeter is joined across a part. (a) True (b) False
30. 30.📏 How many ohms (Ω) is 5.2 kΩ?
31. 31.True or false: the voltmeter measures voltage. (a) False (b) True
32. 32.True or false: voltage is measured in ohms (Ω). (a) True (b) False
33. 33.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
34. 34.📏 How many amperes (A) is 2480 mA? =
35. 35.True or false: the ammeter measures current. (a) False (b) True
36. 36.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
37. 37.📏 How many milliamperes (mA) is 0.51 A?
38. 38.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) the flow of charge (d) energy used each second
39. 39.📏 How many amperes (A) is 200 mA? =
40. 40.📏 How many watts (W) is 1.1 kW?

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