Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 190 · 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 voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
2. 2.True or false: current is measured in amperes (A). (a) False (b) True
3. 3.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
4. 4.True or false: energy used each second is measured in watts (W). (a) True (b) False
5. 5.📏 How many amperes (A) is 1370 mA? =
6. 6.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) current
7. 7.True or false: the ammeter is joined across a part. (a) False (b) True
8. 8.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
9. 9.📏 How many kilo-ohms (kΩ) is 7100 Ω? =
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
11. 11.📏 How many kilowatts (kW) is 350 W? =
12. 12.📏 How many milliamperes (mA) is 1.13 A?
13. 13.True or false: the ammeter measures voltage. (a) True (b) False
14. 14.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
15. 15.Which of these is measured in ohms (Ω)? (a) power (b) energy used each second (c) resistance (d) current
16. 16.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
17. 17.True or false: resistance is measured in ohms (Ω). (a) False (b) True
18. 18.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
19. 19.📏 How many kilowatts (kW) is 650 W? =
20. 20.True or false: power is measured in watts (W). (a) False (b) True
21. 21.True or false: the ammeter is joined in series. (a) False (b) True
22. 22.📏 How many ohms (Ω) is 0.1 kΩ?
23. 23.📏 How many amperes (A) is 1100 mA? =
24. 24.Which of these is measured in amperes (A)? (a) current (b) voltage (c) resistance (d) the push of a cell
25. 25.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
26. 26.📏 How many watts (W) is 1.5 kW?
27. 27.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
28. 28.📏 How many milliamperes (mA) is 1.14 A?
29. 29.Which of these is measured in ohms (Ω)? (a) power (b) current (c) how much a part resists (d) voltage
30. 30.📏 How many ohms (Ω) is 2.3 kΩ?
31. 31.📏 How many amperes (A) is 330 mA? =
32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
33. 33.True or false: the voltmeter is joined across a part. (a) True (b) False
34. 34.📏 How many watts (W) is 3.9 kW?
35. 35.True or false: the flow of charge is measured in watts (W). (a) True (b) False
36. 36.📏 How many ohms (Ω) is 1.2 kΩ?
37. 37.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
38. 38.📏 How many amperes (A) is 590 mA? =
39. 39.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
40. 40.📏 How many amperes (A) is 610 mA? =

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