Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 498 · 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) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
3. 3.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
4. 4.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) resistance (d) power
5. 5.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) voltage (d) energy used each second
6. 6.True or false: the ammeter measures voltage. (a) False (b) True
7. 7.True or false: energy used each second is measured in amperes (A). (a) False (b) True
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
9. 9.📏 How many milliamperes (mA) is 0.3 A?
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 100 (d) 10
11. 11.📏 How many amperes (A) is 190 mA? =
12. 12.True or false: resistance is measured in volts (V). (a) True (b) False
13. 13.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
14. 14.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
15. 15.True or false: the voltmeter measures voltage. (a) False (b) True
16. 16.📏 How many ohms (Ω) is 9.5 kΩ?
17. 17.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) energy used each second (c) the push of a cell (d) power
18. 18.Which of these is measured in amperes (A)? (a) voltage (b) current (c) energy used each second (d) how much a part resists
19. 19.📏 How many kilowatts (kW) is 4250 W? =
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
21. 21.📏 How many ohms (Ω) is 7.8 kΩ?
22. 22.📏 How many kilowatts (kW) is 4450 W? =
23. 23.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
24. 24.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
25. 25.📏 How many amperes (A) is 2500 mA? =
26. 26.True or false: voltage is measured in volts (V). (a) True (b) False
27. 27.True or false: resistance is measured in ohms (Ω). (a) True (b) False
28. 28.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
29. 29.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) voltage (d) resistance
30. 30.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
31. 31.True or false: the voltmeter is joined across a part. (a) False (b) True
32. 32.True or false: the push of a cell is measured in volts (V). (a) False (b) True
33. 33.📏 How many ohms (Ω) is 0.1 kΩ?
34. 34.📏 How many watts (W) is 1.5 kW?
35. 35.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
36. 36.📏 How many amperes (A) is 1270 mA? =
37. 37.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
38. 38.True or false: the ammeter is joined in series. (a) False (b) True
39. 39.📏 How many milliamperes (mA) is 2.86 A?
40. 40.📏 How many amperes (A) is 160 mA? =

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