Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 432 · 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.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
2. 2.True or false: voltage is measured in volts (V). (a) True (b) False
3. 3.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) the push of a cell (d) voltage
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
5. 5.True or false: the voltmeter measures voltage. (a) False (b) True
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
7. 7.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
8. 8.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
9. 9.📏 How many milliamperes (mA) is 2.06 A?
10. 10.True or false: the voltmeter is joined in series. (a) False (b) True
11. 11.True or false: the voltmeter is joined across a part. (a) False (b) True
12. 12.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
13. 13.📏 How many ohms (Ω) is 4.8 kΩ?
14. 14.📏 How many kilowatts (kW) is 1500 W? =
15. 15.📏 How many amperes (A) is 360 mA? =
16. 16.True or false: the ammeter is joined in series. (a) True (b) False
17. 17.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
18. 18.True or false: energy used each second is measured in volts (V). (a) True (b) False
19. 19.📏 How many amperes (A) is 580 mA? =
20. 20.📏 How many kilowatts (kW) is 300 W? =
21. 21.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
22. 22.True or false: resistance is measured in amperes (A). (a) False (b) True
23. 23.True or false: voltage is measured in amperes (A). (a) True (b) False
24. 24.📏 How many kilo-ohms (kΩ) is 6900 Ω? =
25. 25.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
26. 26.True or false: energy used each second is measured in watts (W). (a) False (b) True
27. 27.📏 How many kilo-ohms (kΩ) is 5000 Ω? =
28. 28.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
29. 29.📏 How many amperes (A) is 2150 mA? =
30. 30.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
31. 31.True or false: the ammeter measures voltage. (a) True (b) False
32. 32.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
33. 33.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
34. 34.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
35. 35.True or false: resistance is measured in ohms (Ω). (a) False (b) True
36. 36.Which of these is measured in watts (W)? (a) resistance (b) the push of a cell (c) the flow of charge (d) power
37. 37.📏 How many ohms (Ω) is 7.5 kΩ?
38. 38.📏 How many kilo-ohms (kΩ) is 1500 Ω? =
39. 39.📏 How many kilowatts (kW) is 4150 W? =
40. 40.📏 How many ohms (Ω) is 6.1 kΩ?

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