Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 469 · 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 of these is measured in amperes (A)? (a) how much a part resists (b) current (c) resistance (d) energy used each second
2. 2.Which of these is measured in watts (W)? (a) current (b) voltage (c) energy used each second (d) the push of a cell
3. 3.True or false: the ammeter measures voltage. (a) True (b) False
4. 4.Which of these is measured in amperes (A)? (a) resistance (b) power (c) the flow of charge (d) how much a part resists
5. 5.True or false: the ammeter is joined in series. (a) True (b) False
6. 6.📏 How many milliamperes (mA) is 1.02 A?
7. 7.True or false: the ammeter is joined across a part. (a) False (b) True
8. 8.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
9. 9.True or false: the voltmeter measures voltage. (a) False (b) True
10. 10.📏 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
11. 11.📏 How many kilowatts (kW) is 850 W? =
12. 12.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
13. 13.True or false: voltage is measured in volts (V). (a) True (b) False
14. 14.📏 How many kilo-ohms (kΩ) is 1900 Ω? =
15. 15.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) resistance (d) power
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
18. 18.True or false: the voltmeter is joined across a part. (a) False (b) True
19. 19.True or false: the push of a cell is measured in volts (V). (a) True (b) False
20. 20.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
21. 21.True or false: energy used each second is measured in volts (V). (a) False (b) True
22. 22.📏 How many ohms (Ω) is 2.2 kΩ?
23. 23.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
24. 24.True or false: current is measured in watts (W). (a) True (b) False
25. 25.True or false: resistance is measured in watts (W). (a) False (b) True
26. 26.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
27. 27.True or false: current is measured in volts (V). (a) True (b) False
28. 28.📏 How many watts (W) is 1.4 kW?
29. 29.📏 How many milliamperes (mA) is 1.58 A?
30. 30.True or false: power is measured in volts (V). (a) True (b) False
31. 31.📏 How many milliamperes (mA) is 0.19 A?
32. 32.📏 How many amperes (A) is 1280 mA? =
33. 33.Which of these is measured in ohms (Ω)? (a) resistance (b) power (c) the push of a cell (d) voltage
34. 34.Which of these is measured in volts (V)? (a) voltage (b) power (c) current (d) the flow of charge
35. 35.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
36. 36.Which of these is measured in watts (W)? (a) voltage (b) resistance (c) the push of a cell (d) power
37. 37.📏 How many watts (W) is 3.3 kW?
38. 38.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
39. 39.True or false: current is measured in ohms (Ω). (a) True (b) False
40. 40.True or false: the push of a cell is measured in watts (W). (a) False (b) True

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