Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 736 · 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: power is measured in watts (W). (a) False (b) True
2. 2.📏 How many kilo-ohms (kΩ) is 7000 Ω? =
3. 3.True or false: energy used each second is measured in volts (V). (a) True (b) False
4. 4.📏 How many watts (W) is 0.3 kW?
5. 5.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
6. 6.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) the push of a cell (d) voltage
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
8. 8.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
9. 9.True or false: current is measured in amperes (A). (a) True (b) False
10. 10.True or false: voltage is measured in amperes (A). (a) False (b) True
11. 11.📏 How many kilowatts (kW) is 2750 W? =
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
13. 13.📏 How many ohms (Ω) is 5.1 kΩ?
14. 14.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
15. 15.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
16. 16.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
17. 17.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
18. 18.True or false: the voltmeter measures current. (a) True (b) False
19. 19.True or false: the voltmeter is joined across a part. (a) True (b) False
20. 20.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
21. 21.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
22. 22.📏 How many amperes (A) is 270 mA? =
23. 23.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
24. 24.📏 How many milliamperes (mA) is 2.16 A?
25. 25.True or false: the flow of charge is measured in watts (W). (a) False (b) True
26. 26.True or false: voltage is measured in watts (W). (a) True (b) False
27. 27.True or false: voltage is measured in volts (V). (a) False (b) True
28. 28.True or false: the ammeter is joined in series. (a) True (b) False
29. 29.True or false: resistance is measured in volts (V). (a) False (b) True
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
31. 31.True or false: current is measured in volts (V). (a) False (b) True
32. 32.True or false: the ammeter measures current. (a) True (b) False
33. 33.Which of these is measured in volts (V)? (a) voltage (b) resistance (c) how much a part resists (d) the flow of charge
34. 34.📏 How many ohms (Ω) is 0.2 kΩ?
35. 35.📏 How many amperes (A) is 790 mA? =
36. 36.True or false: the ammeter is joined across a part. (a) False (b) True
37. 37.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
38. 38.📏 How many milliamperes (mA) is 0.67 A?
39. 39.📏 How many ohms (Ω) is 1.2 kΩ?
40. 40.📏 How many amperes (A) is 1860 mA? =

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