Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 919 · 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: how much a part resists is measured in ohms (Ω). (a) False (b) True
2. 2.True or false: the voltmeter is joined in series. (a) True (b) False
3. 3.True or false: the voltmeter measures current. (a) False (b) True
4. 4.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) current
5. 5.📏 How many ohms (Ω) is 0.1 kΩ?
6. 6.📏 How many amperes (A) is 840 mA? =
7. 7.📏 How many milliamperes (mA) is 1.3 A?
8. 8.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
9. 9.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
10. 10.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
11. 11.True or false: how much a part resists is measured in volts (V). (a) True (b) False
12. 12.True or false: the voltmeter is joined across a part. (a) True (b) False
13. 13.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) current (d) power
14. 14.📏 How many milliamperes (mA) is 2.33 A?
15. 15.Which of these is measured in watts (W)? (a) the flow of charge (b) the push of a cell (c) voltage (d) energy used each second
16. 16.True or false: energy used each second is measured in watts (W). (a) False (b) True
17. 17.📏 How many milliamperes (mA) is 2.82 A?
18. 18.True or false: current is measured in amperes (A). (a) True (b) False
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
21. 21.📏 How many milliamperes (mA) is 1.08 A?
22. 22.True or false: the ammeter measures current. (a) False (b) True
23. 23.📏 How many milliamperes (mA) is 2.76 A?
24. 24.📏 How many kilowatts (kW) is 3150 W? =
25. 25.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
26. 26.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
27. 27.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
28. 28.📏 How many milliamperes (mA) is 1.55 A?
29. 29.📏 How many kilowatts (kW) is 2900 W? =
30. 30.📏 How many amperes (A) is 2330 mA? =
31. 31.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
32. 32.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
33. 33.📏 How many milliamperes (mA) is 1.77 A?
34. 34.📏 How many milliamperes (mA) is 1.09 A?
35. 35.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
36. 36.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
37. 37.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
38. 38.📏 How many ohms (Ω) is 2.3 kΩ?
39. 39.📏 How many kilowatts (kW) is 4750 W? =
40. 40.True or false: power is measured in watts (W). (a) True (b) False

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