Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 962 · 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 current. (a) False (b) True
2. 2.True or false: current is measured in amperes (A). (a) True (b) False
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
4. 4.📏 How many ohms (Ω) is 3 kΩ?
5. 5.📏 How many ohms (Ω) is 9.2 kΩ?
6. 6.📏 How many amperes (A) is 2970 mA? =
7. 7.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
8. 8.True or false: the push of a cell is measured in volts (V). (a) False (b) True
9. 9.True or false: resistance is measured in volts (V). (a) False (b) True
10. 10.True or false: the ammeter measures voltage. (a) True (b) False
11. 11.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
12. 12.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
13. 13.📏 How many amperes (A) is 1660 mA? =
14. 14.📏 How many milliamperes (mA) is 0.52 A?
15. 15.📏 How many kilo-ohms (kΩ) is 4100 Ω? =
16. 16.True or false: the ammeter is joined in series. (a) False (b) True
17. 17.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
18. 18.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
19. 19.📏 How many kilo-ohms (kΩ) is 2100 Ω? =
20. 20.📏 How many ohms (Ω) is 1.5 kΩ?
21. 21.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
22. 22.True or false: the flow of charge is measured in volts (V). (a) False (b) True
23. 23.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
24. 24.Which of these is measured in volts (V)? (a) the flow of charge (b) power (c) voltage (d) current
25. 25.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) power (d) energy used each second
26. 26.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
27. 27.📏 How many ohms (Ω) is 3.6 kΩ?
28. 28.True or false: the voltmeter is joined across a part. (a) False (b) True
29. 29.True or false: voltage is measured in watts (W). (a) False (b) True
30. 30.📏 How many milliamperes (mA) is 0.39 A?
31. 31.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
32. 32.True or false: the ammeter is joined across a part. (a) True (b) False
33. 33.📏 How many ohms (Ω) is 5.4 kΩ?
34. 34.📏 How many ohms (Ω) is 8.5 kΩ?
35. 35.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 1024 (d) 100
36. 36.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
37. 37.Which of these is measured in watts (W)? (a) how much a part resists (b) the flow of charge (c) voltage (d) power
38. 38.True or false: resistance is measured in watts (W). (a) True (b) False
39. 39.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
40. 40.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)

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