Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 677 · 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 the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
2. 2.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) power (d) current
3. 3.True or false: the flow of charge is measured in volts (V). (a) True (b) False
4. 4.📏 How many watts (W) is 4.8 kW?
5. 5.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
6. 6.Which of these is measured in watts (W)? (a) voltage (b) current (c) energy used each second (d) how much a part resists
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
8. 8.📏 How many amperes (A) is 1540 mA? =
9. 9.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
10. 10.📏 How many milliamperes (mA) is 0.43 A?
11. 11.📏 How many milliamperes (mA) is 1.58 A?
12. 12.Which of these is measured in amperes (A)? (a) resistance (b) current (c) power (d) energy used each second
13. 13.True or false: the push of a cell is measured in volts (V). (a) False (b) True
14. 14.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
15. 15.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
16. 16.📏 How many kilo-ohms (kΩ) is 8700 Ω? =
17. 17.📏 How many amperes (A) is 2490 mA? =
18. 18.📏 How many watts (W) is 2.5 kW?
19. 19.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
20. 20.True or false: the ammeter measures current. (a) True (b) False
21. 21.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
22. 22.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
23. 23.True or false: resistance is measured in volts (V). (a) False (b) True
24. 24.📏 How many ohms (Ω) is 1.6 kΩ?
25. 25.📏 How many milliamperes (mA) is 0.47 A?
26. 26.True or false: energy used each second is measured in watts (W). (a) False (b) True
27. 27.True or false: the ammeter is joined across a part. (a) False (b) True
28. 28.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
29. 29.📏 How many amperes (A) is 2450 mA? =
30. 30.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) the flow of charge (d) the push of a cell
31. 31.True or false: the voltmeter measures voltage. (a) True (b) False
32. 32.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
33. 33.📏 How many watts (W) is 2 kW?
34. 34.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
35. 35.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 100 (d) 10
36. 36.True or false: voltage is measured in amperes (A). (a) True (b) False
37. 37.📏 How many kilowatts (kW) is 2700 W? =
38. 38.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) how much a part resists (d) the flow of charge
39. 39.Which of these is measured in volts (V)? (a) voltage (b) power (c) resistance (d) current
40. 40.📏 How many ohms (Ω) is 0.6 kΩ?

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