Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 52 · 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.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
2. 2.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
3. 3.📏 How many amperes (A) is 1920 mA? =
4. 4.True or false: the flow of charge is measured in watts (W). (a) False (b) True
5. 5.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
6. 6.📏 How many amperes (A) is 2510 mA? =
7. 7.True or false: the voltmeter is joined across a part. (a) False (b) True
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
9. 9.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
10. 10.True or false: the ammeter measures voltage. (a) False (b) True
11. 11.Which of these is measured in amperes (A)? (a) resistance (b) current (c) how much a part resists (d) the push of a cell
12. 12.Which of these is measured in volts (V)? (a) voltage (b) power (c) current (d) how much a part resists
13. 13.True or false: the ammeter is joined in series. (a) False (b) True
14. 14.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
15. 15.True or false: voltage is measured in ohms (Ω). (a) False (b) True
16. 16.📏 How many watts (W) is 3.7 kW?
17. 17.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
18. 18.📏 How many milliamperes (mA) is 2.01 A?
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
20. 20.Which of these is measured in ohms (Ω)? (a) resistance (b) power (c) the push of a cell (d) current
21. 21.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
22. 22.📏 How many amperes (A) is 820 mA? =
23. 23.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) current (c) the push of a cell (d) power
24. 24.📏 How many kilowatts (kW) is 1650 W? =
25. 25.True or false: energy used each second is measured in volts (V). (a) False (b) True
26. 26.📏 How many kilo-ohms (kΩ) is 4400 Ω? =
27. 27.True or false: the ammeter measures current. (a) False (b) True
28. 28.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
29. 29.True or false: the voltmeter measures voltage. (a) False (b) True
30. 30.True or false: voltage is measured in volts (V). (a) True (b) False
31. 31.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
32. 32.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 100 (d) 10
33. 33.📏 How many amperes (A) is 2230 mA? =
34. 34.📏 How many amperes (A) is 530 mA? =
35. 35.📏 How many ohms (Ω) is 1.7 kΩ?
36. 36.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
37. 37.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
38. 38.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
39. 39.📏 How many watts (W) is 3.8 kW?
40. 40.True or false: the voltmeter is joined in series. (a) True (b) False

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