Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 543 · 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.📏 How many milliamperes (mA) is 1.39 A?
2. 2.Which of these is measured in volts (V)? (a) how much a part resists (b) power (c) resistance (d) the push of a cell
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
4. 4.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) current (d) how much a part resists
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
7. 7.📏 How many kilowatts (kW) is 3800 W? =
8. 8.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
9. 9.True or false: the ammeter measures voltage. (a) True (b) False
10. 10.True or false: resistance is measured in watts (W). (a) False (b) True
11. 11.📏 How many watts (W) is 4.1 kW?
12. 12.📏 How many ohms (Ω) is 3.3 kΩ?
13. 13.📏 How many amperes (A) is 170 mA? =
14. 14.📏 How many amperes (A) is 1940 mA? =
15. 15.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
16. 16.True or false: the ammeter measures current. (a) True (b) False
17. 17.📏 How many kilowatts (kW) is 600 W? =
18. 18.True or false: how much a part resists is measured in watts (W). (a) True (b) False
19. 19.📏 How many watts (W) is 4.6 kW?
20. 20.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
21. 21.True or false: resistance is measured in ohms (Ω). (a) True (b) False
22. 22.True or false: current is measured in ohms (Ω). (a) True (b) False
23. 23.📏 How many kilo-ohms (kΩ) is 100 Ω? =
24. 24.True or false: the ammeter is joined in series. (a) False (b) True
25. 25.True or false: the ammeter is joined across a part. (a) True (b) False
26. 26.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
27. 27.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
28. 28.True or false: voltage is measured in ohms (Ω). (a) False (b) True
29. 29.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
30. 30.True or false: the push of a cell is measured in volts (V). (a) True (b) False
31. 31.True or false: voltage is measured in volts (V). (a) False (b) True
32. 32.True or false: energy used each second is measured in watts (W). (a) False (b) True
33. 33.📏 How many milliamperes (mA) is 1.8 A?
34. 34.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
35. 35.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) current (d) the push of a cell
36. 36.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
37. 37.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
38. 38.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
39. 39.True or false: power is measured in watts (W). (a) True (b) False
40. 40.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False

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