Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 514 · 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 of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) resistance (d) energy used each second
2. 2.True or false: energy used each second is measured in amperes (A). (a) False (b) True
3. 3.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
7. 7.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
8. 8.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) how much a part resists (d) energy used each second
9. 9.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) power (c) voltage (d) energy used each second
10. 10.📏 How many milliamperes (mA) is 0.53 A?
11. 11.📏 How many ohms (Ω) is 1.8 kΩ?
12. 12.📏 How many amperes (A) is 2890 mA? =
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
14. 14.📏 How many watts (W) is 0.8 kW?
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
16. 16.📏 How many ohms (Ω) is 3.4 kΩ?
17. 17.📏 How many kilowatts (kW) is 4100 W? =
18. 18.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
19. 19.True or false: the voltmeter measures voltage. (a) True (b) False
20. 20.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
22. 22.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
23. 23.📏 How many amperes (A) is 1620 mA? =
24. 24.Which of these is measured in watts (W)? (a) power (b) resistance (c) the push of a cell (d) current
25. 25.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
26. 26.True or false: the voltmeter is joined across a part. (a) False (b) True
27. 27.📏 How many amperes (A) is 250 mA? =
28. 28.📏 How many milliamperes (mA) is 2.88 A?
29. 29.📏 How many amperes (A) is 1820 mA? =
30. 30.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
31. 31.📏 How many milliamperes (mA) is 2.84 A?
32. 32.📏 How many milliamperes (mA) is 0.42 A?
33. 33.📏 How many watts (W) is 1.1 kW?
34. 34.📏 How many watts (W) is 1.6 kW?
35. 35.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
36. 36.📏 How many milliamperes (mA) is 2.4 A?
37. 37.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
38. 38.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
39. 39.📏 How many amperes (A) is 2930 mA? =
40. 40.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)

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