Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 461 · 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) voltage (c) resistance (d) power
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
3. 3.📏 How many milliamperes (mA) is 1.02 A?
4. 4.True or false: voltage is measured in ohms (Ω). (a) True (b) False
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
6. 6.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
7. 7.📏 How many watts (W) is 5 kW?
8. 8.📏 How many watts (W) is 1 kW?
9. 9.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) the push of a cell (d) energy used each second
10. 10.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
11. 11.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
12. 12.📏 How many ohms (Ω) is 4.7 kΩ?
13. 13.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
14. 14.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) current (d) the push of a cell
15. 15.True or false: voltage is measured in volts (V). (a) False (b) True
16. 16.📏 How many watts (W) is 0.1 kW?
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
18. 18.True or false: the ammeter measures voltage. (a) False (b) True
19. 19.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
20. 20.📏 How many milliamperes (mA) is 2.22 A?
21. 21.📏 How many amperes (A) is 1000 mA? =
22. 22.Which of these is measured in watts (W)? (a) power (b) voltage (c) resistance (d) current
23. 23.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
24. 24.True or false: the voltmeter measures voltage. (a) True (b) False
25. 25.📏 How many milliamperes (mA) is 0.86 A?
26. 26.📏 How many amperes (A) is 1370 mA? =
27. 27.True or false: the ammeter is joined across a part. (a) True (b) False
28. 28.True or false: the voltmeter measures current. (a) True (b) False
29. 29.📏 How many milliamperes (mA) is 1.05 A?
30. 30.📏 How many watts (W) is 1.3 kW?
31. 31.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) the push of a cell (d) voltage
32. 32.📏 How many ohms (Ω) is 0.5 kΩ?
33. 33.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
34. 34.True or false: the ammeter measures current. (a) True (b) False
35. 35.Which of these is measured in ohms (Ω)? (a) voltage (b) current (c) resistance (d) power
36. 36.True or false: the push of a cell is measured in volts (V). (a) True (b) False
37. 37.📏 How many amperes (A) is 1870 mA? =
38. 38.True or false: resistance is measured in ohms (Ω). (a) True (b) False
39. 39.True or false: how much a part resists is measured in watts (W). (a) True (b) False
40. 40.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure

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