Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 483 · 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.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
2. 2.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
3. 3.True or false: the ammeter is joined across a part. (a) False (b) True
4. 4.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
5. 5.📏 How many amperes (A) is 900 mA? =
6. 6.True or false: how much a part resists is measured in volts (V). (a) False (b) True
7. 7.📏 How many milliamperes (mA) is 3 A?
8. 8.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
9. 9.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the flow of charge (c) voltage (d) power
10. 10.Which of these is measured in volts (V)? (a) power (b) energy used each second (c) the push of a cell (d) resistance
11. 11.Which of these is measured in amperes (A)? (a) how much a part resists (b) the flow of charge (c) voltage (d) the push of a cell
12. 12.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
13. 13.True or false: current is measured in volts (V). (a) False (b) True
14. 14.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
15. 15.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
16. 16.True or false: the flow of charge is measured in volts (V). (a) True (b) False
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
18. 18.True or false: energy used each second is measured in amperes (A). (a) False (b) True
19. 19.Which of these is measured in watts (W)? (a) current (b) voltage (c) how much a part resists (d) power
20. 20.📏 How many kilowatts (kW) is 1250 W? =
21. 21.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) resistance (d) energy used each second
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
23. 23.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
24. 24.Which of these is measured in watts (W)? (a) the flow of charge (b) resistance (c) energy used each second (d) the push of a cell
25. 25.📏 How many amperes (A) is 2800 mA? =
26. 26.📏 How many milliamperes (mA) is 1.5 A?
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
28. 28.True or false: the ammeter measures current. (a) False (b) True
29. 29.📏 How many watts (W) is 0.7 kW?
30. 30.📏 How many kilowatts (kW) is 2600 W? =
31. 31.📏 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
32. 32.📏 How many amperes (A) is 1520 mA? =
33. 33.Which of these is measured in volts (V)? (a) current (b) resistance (c) voltage (d) power
34. 34.True or false: the ammeter is joined in series. (a) False (b) True
35. 35.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
36. 36.True or false: the voltmeter measures voltage. (a) True (b) False
37. 37.True or false: voltage is measured in volts (V). (a) False (b) True
38. 38.True or false: the ammeter measures voltage. (a) True (b) False
39. 39.📏 How many amperes (A) is 780 mA? =
40. 40.📏 How many milliamperes (mA) is 2.25 A?

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