Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 452 · 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 2.57 A?
2. 2.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
3. 3.True or false: energy used each second is measured in volts (V). (a) True (b) False
4. 4.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
6. 6.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
7. 7.📏 How many milliamperes (mA) is 1.06 A?
8. 8.📏 How many ohms (Ω) is 9.7 kΩ?
9. 9.True or false: the voltmeter is joined across a part. (a) False (b) True
10. 10.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) power (d) the flow of charge
11. 11.📏 How many kilowatts (kW) is 5000 W? =
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
13. 13.Which of these is measured in amperes (A)? (a) how much a part resists (b) voltage (c) resistance (d) current
14. 14.True or false: the push of a cell is measured in volts (V). (a) True (b) False
15. 15.Which of these is measured in watts (W)? (a) current (b) resistance (c) the push of a cell (d) power
16. 16.📏 How many watts (W) is 0.8 kW?
17. 17.True or false: energy used each second is measured in watts (W). (a) False (b) True
18. 18.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
19. 19.True or false: the ammeter measures voltage. (a) False (b) True
20. 20.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
21. 21.True or false: voltage is measured in amperes (A). (a) False (b) True
22. 22.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
23. 23.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
24. 24.📏 How many watts (W) is 1.8 kW?
25. 25.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) how much a part resists (c) voltage (d) the push of a cell
26. 26.True or false: the voltmeter is joined in series. (a) False (b) True
27. 27.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
28. 28.True or false: voltage is measured in volts (V). (a) False (b) True
29. 29.📏 How many ohms (Ω) is 5 kΩ?
30. 30.📏 How many kilo-ohms (kΩ) is 9200 Ω? =
31. 31.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
32. 32.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
33. 33.True or false: resistance is measured in watts (W). (a) False (b) True
34. 34.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
35. 35.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
36. 36.True or false: energy used each second is measured in amperes (A). (a) False (b) True
37. 37.True or false: current is measured in amperes (A). (a) False (b) True
38. 38.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) resistance (d) power
39. 39.📏 How many milliamperes (mA) is 0.84 A?
40. 40.📏 How many kilowatts (kW) is 4800 W? =

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