Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 853 · 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 ohms (Ω)? (a) the flow of charge (b) resistance (c) voltage (d) power
2. 2.📏 How many amperes (A) is 30 mA? =
3. 3.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
4. 4.📏 How many amperes (A) is 2180 mA? =
5. 5.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
6. 6.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
7. 7.Which of these is measured in watts (W)? (a) current (b) how much a part resists (c) energy used each second (d) voltage
8. 8.📏 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
9. 9.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
10. 10.📏 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
11. 11.True or false: the voltmeter measures current. (a) False (b) True
12. 12.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
13. 13.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
14. 14.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
17. 17.True or false: the ammeter is joined in series. (a) False (b) True
18. 18.📏 How many ohms (Ω) is 6.9 kΩ?
19. 19.True or false: power is measured in volts (V). (a) True (b) False
20. 20.📏 How many amperes (A) is 140 mA? =
21. 21.📏 How many ohms (Ω) is 2.1 kΩ?
22. 22.📏 How many amperes (A) is 2280 mA? =
23. 23.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
24. 24.True or false: energy used each second is measured in volts (V). (a) False (b) True
25. 25.📏 How many amperes (A) is 240 mA? =
26. 26.True or false: power is measured in watts (W). (a) False (b) True
27. 27.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
28. 28.📏 How many amperes (A) is 510 mA? =
29. 29.True or false: resistance is measured in amperes (A). (a) False (b) True
30. 30.Which of these is measured in amperes (A)? (a) resistance (b) the flow of charge (c) energy used each second (d) power
31. 31.True or false: resistance is measured in ohms (Ω). (a) True (b) False
32. 32.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
33. 33.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
34. 34.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
35. 35.True or false: energy used each second is measured in watts (W). (a) False (b) True
36. 36.📏 How many watts (W) is 3.5 kW?
37. 37.📏 How many milliamperes (mA) is 0.37 A?
38. 38.📏 How many watts (W) is 2.6 kW?
39. 39.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
40. 40.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) how much a part resists (d) voltage

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