Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 326 · 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: current is measured in ohms (Ω). (a) False (b) True
2. 2.Which of these is measured in amperes (A)? (a) the flow of charge (b) how much a part resists (c) voltage (d) energy used each second
3. 3.📏 How many milliamperes (mA) is 0.95 A?
4. 4.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
5. 5.Which of these is measured in volts (V)? (a) the flow of charge (b) the push of a cell (c) resistance (d) power
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
7. 7.True or false: the push of a cell is measured in volts (V). (a) False (b) True
8. 8.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
9. 9.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
10. 10.Which of these is measured in amperes (A)? (a) the push of a cell (b) current (c) how much a part resists (d) power
11. 11.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
12. 12.True or false: the ammeter is joined across a part. (a) False (b) True
13. 13.📏 How many kilo-ohms (kΩ) is 7400 Ω? =
14. 14.True or false: the voltmeter measures current. (a) False (b) True
15. 15.📏 How many kilo-ohms (kΩ) is 4900 Ω? =
16. 16.True or false: the voltmeter is joined in series. (a) False (b) True
17. 17.📏 How many ohms (Ω) is 9.1 kΩ?
18. 18.📏 How many milliamperes (mA) is 1.71 A?
19. 19.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
20. 20.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
21. 21.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
22. 22.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) the push of a cell (d) power
23. 23.📏 How many milliamperes (mA) is 1.3 A?
24. 24.📏 How many amperes (A) is 740 mA? =
25. 25.📏 How many milliamperes (mA) is 0.41 A?
26. 26.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
27. 27.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) power (c) current (d) energy used each second
28. 28.True or false: the flow of charge is measured in volts (V). (a) True (b) False
29. 29.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
30. 30.True or false: current is measured in amperes (A). (a) True (b) False
31. 31.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
32. 32.📏 How many watts (W) is 2.6 kW?
33. 33.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
34. 34.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
35. 35.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
36. 36.📏 How many milliamperes (mA) is 2.66 A?
37. 37.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
38. 38.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
39. 39.📏 How many kilo-ohms (kΩ) is 4000 Ω? =
40. 40.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter

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