Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 219 · 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 how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
2. 2.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
3. 3.True or false: the ammeter measures current. (a) True (b) False
4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
5. 5.📏 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
6. 6.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
8. 8.Which of these is measured in amperes (A)? (a) the push of a cell (b) current (c) energy used each second (d) resistance
9. 9.True or false: the voltmeter measures voltage. (a) True (b) False
10. 10.True or false: resistance is measured in volts (V). (a) True (b) False
11. 11.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) how much a part resists (d) the flow of charge
12. 12.📏 How many amperes (A) is 1080 mA? =
13. 13.📏 How many ohms (Ω) is 8.8 kΩ?
14. 14.📏 How many watts (W) is 0.2 kW?
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
16. 16.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
17. 17.📏 How many watts (W) is 4.8 kW?
18. 18.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) resistance (d) energy used each second
19. 19.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
20. 20.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
21. 21.📏 How many kilowatts (kW) is 2550 W? =
22. 22.📏 How many milliamperes (mA) is 1.59 A?
23. 23.📏 How many kilowatts (kW) is 1550 W? =
24. 24.Which of these is measured in volts (V)? (a) current (b) how much a part resists (c) voltage (d) resistance
25. 25.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
26. 26.True or false: the ammeter is joined across a part. (a) True (b) False
27. 27.Which of these is measured in watts (W)? (a) current (b) how much a part resists (c) power (d) the push of a cell
28. 28.📏 How many milliamperes (mA) is 2.58 A?
29. 29.📏 How many milliamperes (mA) is 0.11 A?
30. 30.Which of these is measured in amperes (A)? (a) how much a part resists (b) resistance (c) energy used each second (d) the flow of charge
31. 31.📏 How many kilowatts (kW) is 4650 W? =
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.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
34. 34.📏 How many milliamperes (mA) is 1.77 A?
35. 35.📏 How many watts (W) is 4.1 kW?
36. 36.📏 How many ohms (Ω) is 8.5 kΩ?
37. 37.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
38. 38.True or false: the flow of charge is measured in volts (V). (a) True (b) False
39. 39.📏 How many amperes (A) is 140 mA? =
40. 40.📏 How many amperes (A) is 2550 mA? =

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