Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 888 · 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.📏 How many milliamperes (mA) is 0.08 A?
2. 2.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
4. 4.True or false: the ammeter measures voltage. (a) False (b) True
5. 5.📏 How many amperes (A) is 460 mA? =
6. 6.📏 How many amperes (A) is 2460 mA? =
7. 7.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
8. 8.📏 How many milliamperes (mA) is 1.09 A?
9. 9.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
10. 10.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
11. 11.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) power (d) energy used each second
12. 12.True or false: voltage is measured in amperes (A). (a) False (b) True
13. 13.📏 How many ohms (Ω) is 1.9 kΩ?
14. 14.True or false: the voltmeter measures current. (a) True (b) False
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
16. 16.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
17. 17.True or false: how much a part resists is measured in watts (W). (a) False (b) True
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
19. 19.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) power (d) the flow of charge
20. 20.📏 How many ohms (Ω) is 6.7 kΩ?
21. 21.True or false: the ammeter is joined in series. (a) True (b) False
22. 22.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
23. 23.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
24. 24.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) current (d) how much a part resists
25. 25.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) voltage (d) current
26. 26.True or false: the voltmeter measures voltage. (a) False (b) True
27. 27.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
28. 28.Which of these is measured in watts (W)? (a) voltage (b) power (c) the flow of charge (d) the push of a cell
29. 29.Which of these is measured in amperes (A)? (a) energy used each second (b) power (c) current (d) how much a part resists
30. 30.📏 How many watts (W) is 4.5 kW?
31. 31.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
32. 32.📏 How many milliamperes (mA) is 1.14 A?
33. 33.True or false: voltage is measured in volts (V). (a) False (b) True
34. 34.True or false: the push of a cell is measured in volts (V). (a) False (b) True
35. 35.📏 How many amperes (A) is 560 mA? =
36. 36.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
37. 37.📏 How many milliamperes (mA) is 0.13 A?
38. 38.📏 How many watts (W) is 2.3 kW?
39. 39.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
40. 40.📏 How many ohms (Ω) is 9.4 kΩ?

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