Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 987 · 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) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
2. 2.📏 How many kilowatts (kW) is 3100 W? =
3. 3.📏 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
4. 4.True or false: the voltmeter is joined across a part. (a) False (b) True
5. 5.True or false: current is measured in amperes (A). (a) False (b) True
6. 6.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) voltage (d) current
7. 7.True or false: voltage is measured in volts (V). (a) False (b) True
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
9. 9.📏 How many amperes (A) is 610 mA? =
10. 10.True or false: current is measured in watts (W). (a) True (b) False
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
12. 12.📏 How many amperes (A) is 1830 mA? =
13. 13.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
14. 14.📏 How many amperes (A) is 380 mA? =
15. 15.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) how much a part resists (d) resistance
16. 16.Which of these is measured in amperes (A)? (a) current (b) energy used each second (c) resistance (d) the push of a cell
17. 17.📏 How many amperes (A) is 1970 mA? =
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
19. 19.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
20. 20.📏 How many kilowatts (kW) is 3250 W? =
21. 21.📏 How many watts (W) is 2.4 kW?
22. 22.True or false: the ammeter is joined in series. (a) True (b) False
23. 23.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
24. 24.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
25. 25.True or false: the voltmeter measures voltage. (a) False (b) True
26. 26.True or false: the voltmeter is joined in series. (a) True (b) False
27. 27.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water
28. 28.📏 How many amperes (A) is 660 mA? =
29. 29.True or false: the ammeter measures current. (a) False (b) True
30. 30.True or false: the voltmeter measures current. (a) False (b) True
31. 31.True or false: the flow of charge is measured in volts (V). (a) False (b) True
32. 32.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
33. 33.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
34. 34.📏 How many amperes (A) is 280 mA? =
35. 35.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) power (d) the flow of charge
36. 36.📏 How many milliamperes (mA) is 2.48 A?
37. 37.📏 How many ohms (Ω) is 1.7 kΩ?
38. 38.📏 How many watts (W) is 4.4 kW?
39. 39.📏 How many watts (W) is 0.7 kW?
40. 40.📏 How many kilowatts (kW) is 1900 W? =

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