Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 744 · 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 volts (V)? (a) the flow of charge (b) the push of a cell (c) how much a part resists (d) current
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
3. 3.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
4. 4.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
5. 5.True or false: the ammeter measures current. (a) False (b) True
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
7. 7.True or false: the voltmeter is joined across a part. (a) True (b) False
8. 8.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) power (d) the push of a cell
9. 9.True or false: the ammeter is joined across a part. (a) True (b) False
10. 10.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
11. 11.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
12. 12.📏 How many ohms (Ω) is 1.5 kΩ?
13. 13.📏 How many kilowatts (kW) is 3350 W? =
14. 14.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) the push of a cell (d) current
15. 15.📏 How many kilowatts (kW) is 1300 W? =
16. 16.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) energy used each second (d) power
17. 17.True or false: the voltmeter measures current. (a) True (b) False
18. 18.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
19. 19.📏 How many amperes (A) is 330 mA? =
20. 20.True or false: the voltmeter is joined in series. (a) True (b) False
21. 21.True or false: voltage is measured in amperes (A). (a) False (b) True
22. 22.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
23. 23.📏 How many ohms (Ω) is 8.9 kΩ?
24. 24.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
25. 25.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
26. 26.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
27. 27.📏 How many watts (W) is 1.2 kW?
28. 28.📏 How many kilowatts (kW) is 4700 W? =
29. 29.True or false: the ammeter measures voltage. (a) True (b) False
30. 30.True or false: the ammeter is joined in series. (a) True (b) False
31. 31.True or false: the push of a cell is measured in volts (V). (a) True (b) False
32. 32.Which of these is measured in ohms (Ω)? (a) energy used each second (b) how much a part resists (c) voltage (d) power
33. 33.📏 How many milliamperes (mA) is 0.93 A?
34. 34.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
35. 35.📏 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
36. 36.True or false: current is measured in amperes (A). (a) True (b) False
37. 37.True or false: how much a part resists is measured in volts (V). (a) False (b) True
38. 38.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) resistance (d) power
39. 39.📏 How many watts (W) is 2.5 kW?
40. 40.📏 How many kilowatts (kW) is 4950 W? =

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