Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 968 · 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.True or false: the voltmeter is joined across a part. (a) False (b) True
2. 2.📏 How many milliamperes (mA) is 0.52 A?
3. 3.📏 How many ohms (Ω) is 3.8 kΩ?
4. 4.📏 How many watts (W) is 0.4 kW?
5. 5.📏 How many kilowatts (kW) is 1800 W? =
6. 6.📏 How many ohms (Ω) is 1.4 kΩ?
7. 7.Which of these is measured in amperes (A)? (a) how much a part resists (b) resistance (c) the flow of charge (d) power
8. 8.📏 How many amperes (A) is 740 mA? =
9. 9.📏 How many milliamperes (mA) is 2.39 A?
10. 10.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) the push of a cell (d) resistance
11. 11.📏 How many ohms (Ω) is 1.1 kΩ?
12. 12.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
13. 13.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
14. 14.True or false: voltage is measured in watts (W). (a) False (b) True
15. 15.True or false: the voltmeter measures voltage. (a) False (b) True
16. 16.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
17. 17.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
18. 18.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
19. 19.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
20. 20.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
21. 21.📏 How many ohms (Ω) is 3.7 kΩ?
22. 22.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) energy used each second (d) how much a part resists
23. 23.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
24. 24.📏 How many milliamperes (mA) is 1.81 A?
25. 25.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
26. 26.📏 How many amperes (A) is 2860 mA? =
27. 27.📏 How many amperes (A) is 770 mA? =
28. 28.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
29. 29.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
30. 30.📏 How many milliamperes (mA) is 2.45 A?
31. 31.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
32. 32.📏 How many kilo-ohms (kΩ) is 4000 Ω? =
33. 33.True or false: current is measured in watts (W). (a) True (b) False
34. 34.True or false: the ammeter measures current. (a) True (b) False
35. 35.📏 How many ohms (Ω) is 0.6 kΩ?
36. 36.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
37. 37.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
38. 38.True or false: energy used each second is measured in amperes (A). (a) True (b) False
39. 39.True or false: resistance is measured in watts (W). (a) False (b) True
40. 40.📏 How many kilo-ohms (kΩ) is 8600 Ω? =

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