Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 658 · 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 current? (a) voltmeter (b) ammeter
2. 2.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
4. 4.True or false: the voltmeter measures current. (a) True (b) False
5. 5.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
6. 6.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
7. 7.📏 How many milliamperes (mA) is 1.29 A?
8. 8.📏 How many milliamperes (mA) is 0.29 A?
9. 9.True or false: how much a part resists is measured in watts (W). (a) True (b) False
10. 10.Which of these is measured in watts (W)? (a) current (b) voltage (c) the flow of charge (d) power
11. 11.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) voltage (d) the push of a cell
12. 12.True or false: the flow of charge is measured in volts (V). (a) True (b) False
13. 13.True or false: the voltmeter is joined in series. (a) False (b) True
14. 14.True or false: the ammeter measures voltage. (a) True (b) False
15. 15.📏 How many amperes (A) is 680 mA? =
16. 16.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
17. 17.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
18. 18.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) power (d) the push of a cell
19. 19.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
20. 20.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
21. 21.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
22. 22.True or false: the ammeter is joined in series. (a) False (b) True
23. 23.📏 How many milliamperes (mA) is 1.66 A?
24. 24.True or false: the ammeter is joined across a part. (a) True (b) False
25. 25.True or false: the voltmeter is joined across a part. (a) False (b) True
26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
27. 27.True or false: the voltmeter measures voltage. (a) False (b) True
28. 28.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
29. 29.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
30. 30.📏 How many kilo-ohms (kΩ) is 100 Ω? =
31. 31.📏 How many ohms (Ω) is 0.1 kΩ?
32. 32.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
33. 33.True or false: the push of a cell is measured in volts (V). (a) True (b) False
34. 34.📏 How many amperes (A) is 1890 mA? =
35. 35.📏 How many amperes (A) is 2250 mA? =
36. 36.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) voltage (d) energy used each second
37. 37.True or false: the ammeter measures current. (a) False (b) True
38. 38.Which of these is measured in amperes (A)? (a) the push of a cell (b) the flow of charge (c) power (d) resistance
39. 39.📏 How many kilowatts (kW) is 3600 W? =
40. 40.True or false: current is measured in ohms (Ω). (a) False (b) True

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