Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 533 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
2. 2.True or false: the push of a cell is measured in volts (V). (a) True (b) False
3. 3.True or false: the ammeter is joined in series. (a) False (b) True
4. 4.📏 How many amperes (A) is 1680 mA? =
5. 5.📏 How many amperes (A) is 840 mA? =
6. 6.📏 How many kilo-ohms (kΩ) is 9300 Ω? =
7. 7.True or false: current is measured in ohms (Ω). (a) True (b) False
8. 8.True or false: the ammeter measures voltage. (a) True (b) False
9. 9.True or false: the ammeter is joined across a part. (a) True (b) False
10. 10.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
11. 11.📏 How many milliamperes (mA) is 1.78 A?
12. 12.True or false: resistance is measured in ohms (Ω). (a) True (b) False
13. 13.📏 How many milliamperes (mA) is 2.33 A?
14. 14.📏 How many milliamperes (mA) is 2.77 A?
15. 15.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
16. 16.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
17. 17.📏 How many kilo-ohms (kΩ) is 4000 Ω? =
18. 18.📏 How many milliamperes (mA) is 1.01 A?
19. 19.📏 How many kilo-ohms (kΩ) is 6600 Ω? =
20. 20.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
21. 21.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
22. 22.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
23. 23.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
24. 24.True or false: the voltmeter is joined across a part. (a) True (b) False
25. 25.📏 How many ohms (Ω) is 3.1 kΩ?
26. 26.📏 How many amperes (A) is 40 mA? =
27. 27.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
28. 28.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
29. 29.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
30. 30.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) energy used each second (d) the push of a cell
31. 31.📏 How many milliamperes (mA) is 0.51 A?
32. 32.Which of these is measured in watts (W)? (a) power (b) resistance (c) the push of a cell (d) voltage
33. 33.Which of these is measured in volts (V)? (a) voltage (b) current (c) resistance (d) energy used each second
34. 34.📏 How many amperes (A) is 1650 mA? =
35. 35.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
36. 36.📏 How many milliamperes (mA) is 2.14 A?
37. 37.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
38. 38.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
39. 39.True or false: current is measured in amperes (A). (a) False (b) True
40. 40.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)

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