Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 53 · 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 unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
2. 2.📏 How many milliamperes (mA) is 1.77 A?
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
4. 4.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
5. 5.📏 How many amperes (A) is 2810 mA? =
6. 6.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
7. 7.📏 How many watts (W) is 1.6 kW?
8. 8.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
9. 9.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) the push of a cell (d) resistance
10. 10.📏 How many milliamperes (mA) is 1.08 A?
11. 11.📏 How many ohms (Ω) is 1.7 kΩ?
12. 12.📏 How many kilo-ohms (kΩ) is 400 Ω? =
13. 13.True or false: the ammeter is joined across a part. (a) False (b) True
14. 14.True or false: the ammeter measures current. (a) False (b) True
15. 15.True or false: current is measured in watts (W). (a) True (b) False
16. 16.📏 How many amperes (A) is 1830 mA? =
17. 17.Which of these is measured in watts (W)? (a) current (b) voltage (c) resistance (d) energy used each second
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
19. 19.📏 How many watts (W) is 4.9 kW?
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
21. 21.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) resistance (d) voltage
22. 22.True or false: the voltmeter measures current. (a) False (b) True
23. 23.📏 How many ohms (Ω) is 4.2 kΩ?
24. 24.True or false: current is measured in amperes (A). (a) True (b) False
25. 25.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) the flow of charge (d) resistance
26. 26.True or false: the voltmeter is joined across a part. (a) True (b) False
27. 27.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
28. 28.📏 How many kilowatts (kW) is 2500 W? =
29. 29.True or false: the voltmeter is joined in series. (a) True (b) False
30. 30.📏 How many kilo-ohms (kΩ) is 8900 Ω? =
31. 31.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
32. 32.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
33. 33.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
34. 34.📏 How many milliamperes (mA) is 0.48 A?
35. 35.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
36. 36.📏 How many milliamperes (mA) is 0.71 A?
37. 37.📏 How many ohms (Ω) is 4.7 kΩ?
38. 38.Which of these is measured in watts (W)? (a) voltage (b) power (c) the push of a cell (d) current
39. 39.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) current (d) how much a part resists
40. 40.📏 How many amperes (A) is 1800 mA? =

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