Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 222 · 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 ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
2. 2.📏 How many kilowatts (kW) is 1650 W? =
3. 3.📏 How many kilowatts (kW) is 400 W? =
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
5. 5.📏 How many amperes (A) is 2430 mA? =
6. 6.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
7. 7.Which of these is measured in amperes (A)? (a) current (b) voltage (c) resistance (d) power
8. 8.📏 How many kilowatts (kW) is 900 W? =
9. 9.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
10. 10.📏 How many watts (W) is 5 kW?
11. 11.📏 How many kilowatts (kW) is 3900 W? =
12. 12.True or false: the voltmeter measures voltage. (a) False (b) True
13. 13.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) voltage (d) current
14. 14.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) the push of a cell (d) current
15. 15.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
16. 16.Which of these is measured in watts (W)? (a) current (b) energy used each second (c) how much a part resists (d) resistance
17. 17.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
18. 18.📏 How many milliamperes (mA) is 2.7 A?
19. 19.True or false: the flow of charge is measured in watts (W). (a) True (b) False
20. 20.📏 How many amperes (A) is 2610 mA? =
21. 21.📏 How many amperes (A) is 2220 mA? =
22. 22.📏 How many ohms (Ω) is 4.9 kΩ?
23. 23.True or false: the ammeter is joined in series. (a) True (b) False
24. 24.True or false: the ammeter is joined across a part. (a) False (b) True
25. 25.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
26. 26.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
27. 27.True or false: power is measured in watts (W). (a) True (b) False
28. 28.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
29. 29.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) power (d) how much a part resists
30. 30.📏 How many amperes (A) is 850 mA? =
31. 31.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
32. 32.📏 How many kilowatts (kW) is 4000 W? =
33. 33.📏 How many amperes (A) is 1950 mA? =
34. 34.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
35. 35.True or false: resistance is measured in amperes (A). (a) True (b) False
36. 36.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
37. 37.📏 How many ohms (Ω) is 5.1 kΩ?
38. 38.📏 How many amperes (A) is 970 mA? =
39. 39.📏 How many milliamperes (mA) is 0.09 A?
40. 40.True or false: current is measured in ohms (Ω). (a) True (b) False

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