Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 905 · 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, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
3. 3.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
4. 4.Which of these is measured in amperes (A)? (a) voltage (b) current (c) how much a part resists (d) power
5. 5.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
7. 7.Which of these is measured in ohms (Ω)? (a) energy used each second (b) how much a part resists (c) power (d) current
8. 8.📏 How many amperes (A) is 2770 mA? =
9. 9.True or false: power is measured in volts (V). (a) True (b) False
10. 10.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
11. 11.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
12. 12.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
13. 13.📏 How many kilowatts (kW) is 750 W? =
14. 14.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
15. 15.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
17. 17.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
18. 18.True or false: resistance is measured in ohms (Ω). (a) False (b) True
19. 19.True or false: voltage is measured in volts (V). (a) True (b) False
20. 20.📏 How many watts (W) is 4.9 kW?
21. 21.📏 How many watts (W) is 3.4 kW?
22. 22.True or false: energy used each second is measured in watts (W). (a) True (b) False
23. 23.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) the flow of charge (d) current
24. 24.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 1000 (d) 10
25. 25.True or false: the voltmeter is joined across a part. (a) True (b) False
26. 26.📏 How many milliamperes (mA) is 2.9 A?
27. 27.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
28. 28.True or false: current is measured in watts (W). (a) True (b) False
29. 29.📏 How many milliamperes (mA) is 2.95 A?
30. 30.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
31. 31.True or false: the ammeter is joined in series. (a) False (b) True
32. 32.Which of these is measured in volts (V)? (a) voltage (b) current (c) the flow of charge (d) resistance
33. 33.True or false: the ammeter measures current. (a) True (b) False
34. 34.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) the flow of charge (d) how much a part resists
35. 35.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
36. 36.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) resistance (d) the push of a cell
37. 37.📏 How many amperes (A) is 2540 mA? =
38. 38.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
39. 39.📏 How many milliamperes (mA) is 1.74 A?
40. 40.📏 How many ohms (Ω) is 4.3 kΩ?

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