Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 145 · 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: energy used each second is measured in amperes (A). (a) False (b) True
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
3. 3.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
4. 4.True or false: the ammeter measures current. (a) False (b) True
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
6. 6.True or false: the flow of charge is measured in watts (W). (a) True (b) False
7. 7.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
9. 9.True or false: the voltmeter measures voltage. (a) False (b) True
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
11. 11.True or false: the ammeter measures voltage. (a) True (b) False
12. 12.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) energy used each second (d) the flow of charge
13. 13.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
14. 14.📏 How many amperes (A) is 350 mA? =
15. 15.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) power (d) how much a part resists
16. 16.True or false: the voltmeter is joined in series. (a) True (b) False
17. 17.📏 How many watts (W) is 2.4 kW?
18. 18.📏 How many ohms (Ω) is 9.3 kΩ?
19. 19.📏 How many kilowatts (kW) is 2350 W? =
20. 20.Which of these is measured in amperes (A)? (a) current (b) resistance (c) how much a part resists (d) energy used each second
21. 21.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
22. 22.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) resistance (d) current
23. 23.True or false: voltage is measured in volts (V). (a) False (b) True
24. 24.True or false: current is measured in volts (V). (a) False (b) True
25. 25.📏 How many milliamperes (mA) is 2.16 A?
26. 26.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
27. 27.True or false: resistance is measured in ohms (Ω). (a) False (b) True
28. 28.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
29. 29.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
30. 30.📏 How many ohms (Ω) is 9.7 kΩ?
31. 31.True or false: voltage is measured in watts (W). (a) False (b) True
32. 32.True or false: the voltmeter is joined across a part. (a) False (b) True
33. 33.True or false: the voltmeter measures current. (a) False (b) True
34. 34.📏 How many kilowatts (kW) is 250 W? =
35. 35.📏 How many watts (W) is 0.4 kW?
36. 36.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) the flow of charge (d) current
37. 37.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
38. 38.📏 How many milliamperes (mA) is 0.12 A?
39. 39.📏 How many kilowatts (kW) is 750 W? =
40. 40.Which of these is measured in volts (V)? (a) resistance (b) how much a part resists (c) current (d) the push of a cell

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