Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 216 · 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 the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
2. 2.True or false: the ammeter measures voltage. (a) True (b) False
3. 3.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
4. 4.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
5. 5.True or false: current is measured in amperes (A). (a) True (b) False
6. 6.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
7. 7.Which of these is measured in watts (W)? (a) power (b) current (c) voltage (d) the push of a cell
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
9. 9.True or false: resistance is measured in volts (V). (a) True (b) False
10. 10.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) current (d) power
11. 11.True or false: energy used each second is measured in amperes (A). (a) True (b) False
12. 12.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
13. 13.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) current (d) how much a part resists
14. 14.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
15. 15.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
16. 16.True or false: the voltmeter is joined across a part. (a) False (b) True
17. 17.True or false: energy used each second is measured in watts (W). (a) False (b) True
18. 18.📏 How many watts (W) is 0.4 kW?
19. 19.📏 How many ohms (Ω) is 3.3 kΩ?
20. 20.Which of these is measured in ohms (Ω)? (a) resistance (b) current (c) the flow of charge (d) the push of a cell
21. 21.📏 How many amperes (A) is 2870 mA? =
22. 22.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
23. 23.True or false: resistance is measured in amperes (A). (a) True (b) False
24. 24.📏 How many amperes (A) is 1880 mA? =
25. 25.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
26. 26.Which of these is measured in amperes (A)? (a) how much a part resists (b) resistance (c) current (d) the push of a cell
27. 27.📏 How many milliamperes (mA) is 1.76 A?
28. 28.📏 How many amperes (A) is 2420 mA? =
29. 29.📏 How many ohms (Ω) is 0.9 kΩ?
30. 30.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
31. 31.📏 How many milliamperes (mA) is 1.89 A?
32. 32.True or false: the ammeter is joined across a part. (a) False (b) True
33. 33.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
34. 34.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
35. 35.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
36. 36.📏 How many ohms (Ω) is 7.8 kΩ?
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 100 (d) 60
38. 38.📏 How many watts (W) is 4.3 kW?
39. 39.True or false: voltage is measured in amperes (A). (a) False (b) True
40. 40.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True

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