Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 839 · 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 unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
2. 2.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
6. 6.📏 How many watts (W) is 0.5 kW?
7. 7.True or false: power is measured in watts (W). (a) True (b) False
8. 8.True or false: the push of a cell is measured in volts (V). (a) True (b) False
9. 9.True or false: the voltmeter measures voltage. (a) True (b) False
10. 10.True or false: current is measured in watts (W). (a) True (b) False
11. 11.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
13. 13.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
15. 15.📏 How many amperes (A) is 940 mA? =
16. 16.Which of these is measured in amperes (A)? (a) power (b) current (c) voltage (d) how much a part resists
17. 17.📏 How many ohms (Ω) is 3.9 kΩ?
18. 18.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) current (d) energy used each second
19. 19.📏 How many milliamperes (mA) is 0.07 A?
20. 20.True or false: the push of a cell is measured in watts (W). (a) True (b) False
21. 21.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) the flow of charge (d) resistance
22. 22.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
23. 23.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
24. 24.Which of these is measured in watts (W)? (a) voltage (b) resistance (c) power (d) the push of a cell
25. 25.True or false: voltage is measured in amperes (A). (a) False (b) True
26. 26.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) voltage (d) how much a part resists
27. 27.True or false: the voltmeter is joined in series. (a) False (b) True
28. 28.True or false: the ammeter is joined in series. (a) True (b) False
29. 29.📏 How many ohms (Ω) is 3 kΩ?
30. 30.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
31. 31.True or false: the voltmeter measures current. (a) True (b) False
32. 32.True or false: how much a part resists is measured in volts (V). (a) True (b) False
33. 33.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
34. 34.📏 How many amperes (A) is 2730 mA? =
35. 35.True or false: the voltmeter is joined across a part. (a) True (b) False
36. 36.True or false: current is measured in volts (V). (a) False (b) True
37. 37.True or false: power is measured in volts (V). (a) False (b) True
38. 38.📏 How many milliamperes (mA) is 2.96 A?
39. 39.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
40. 40.True or false: the ammeter is joined across a part. (a) True (b) False

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