Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 952 · 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 (Ω) is 7.6 kΩ?
2. 2.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) the push of a cell (d) the flow of charge
3. 3.True or false: current is measured in watts (W). (a) True (b) False
4. 4.Which of these is measured in volts (V)? (a) resistance (b) energy used each second (c) power (d) voltage
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
6. 6.📏 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
7. 7.📏 How many kilowatts (kW) is 2400 W? =
8. 8.True or false: the ammeter measures current. (a) False (b) True
9. 9.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
10. 10.📏 How many ohms (Ω) is 4.3 kΩ?
11. 11.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
12. 12.📏 How many watts (W) is 1.8 kW?
13. 13.True or false: the push of a cell is measured in volts (V). (a) False (b) True
14. 14.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
16. 16.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) how much a part resists (d) the push of a cell
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
18. 18.True or false: the voltmeter measures voltage. (a) True (b) False
19. 19.📏 How many watts (W) is 2.7 kW?
20. 20.True or false: the ammeter measures voltage. (a) False (b) True
21. 21.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
22. 22.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
23. 23.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
24. 24.True or false: the voltmeter is joined across a part. (a) False (b) True
25. 25.True or false: the flow of charge is measured in watts (W). (a) True (b) False
26. 26.📏 How many kilowatts (kW) is 1200 W? =
27. 27.📏 How many kilo-ohms (kΩ) is 7000 Ω? =
28. 28.📏 How many kilowatts (kW) is 750 W? =
29. 29.📏 How many kilowatts (kW) is 1050 W? =
30. 30.📏 How many amperes (A) is 2060 mA? =
31. 31.True or false: power is measured in volts (V). (a) True (b) False
32. 32.True or false: power is measured in watts (W). (a) False (b) True
33. 33.📏 How many watts (W) is 3.8 kW?
34. 34.📏 How many amperes (A) is 410 mA? =
35. 35.True or false: current is measured in ohms (Ω). (a) True (b) False
36. 36.True or false: the voltmeter is joined in series. (a) True (b) False
37. 37.📏 How many watts (W) is 0.7 kW?
38. 38.True or false: energy used each second is measured in volts (V). (a) False (b) True
39. 39.📏 How many amperes (A) is 2370 mA? =
40. 40.True or false: resistance is measured in watts (W). (a) False (b) True

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