Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 663 · 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 power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
2. 2.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
3. 3.Which of these is measured in volts (V)? (a) voltage (b) resistance (c) the flow of charge (d) how much a part resists
4. 4.📏 How many amperes (A) is 2300 mA? =
5. 5.True or false: the voltmeter is joined across a part. (a) False (b) True
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 1024 (d) 100
7. 7.True or false: energy used each second is measured in amperes (A). (a) False (b) True
8. 8.True or false: the voltmeter is joined in series. (a) True (b) False
9. 9.True or false: the voltmeter measures current. (a) True (b) False
10. 10.📏 How many amperes (A) is 1890 mA? =
11. 11.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
12. 12.📏 How many watts (W) is 3 kW?
13. 13.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
14. 14.📏 How many milliamperes (mA) is 1.08 A?
15. 15.📏 How many kilo-ohms (kΩ) is 6600 Ω? =
16. 16.True or false: energy used each second is measured in watts (W). (a) True (b) False
17. 17.Which of these is measured in volts (V)? (a) how much a part resists (b) current (c) energy used each second (d) the push of a cell
18. 18.True or false: current is measured in amperes (A). (a) True (b) False
19. 19.📏 How many ohms (Ω) is 5.5 kΩ?
20. 20.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
21. 21.True or false: the ammeter is joined across a part. (a) False (b) True
22. 22.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
23. 23.📏 How many milliamperes (mA) is 0.49 A?
24. 24.📏 How many kilowatts (kW) is 950 W? =
25. 25.True or false: power is measured in volts (V). (a) False (b) True
26. 26.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
27. 27.📏 How many ohms (Ω) is 8.6 kΩ?
28. 28.True or false: the ammeter measures voltage. (a) True (b) False
29. 29.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) voltage (d) how much a part resists
30. 30.True or false: the push of a cell is measured in volts (V). (a) False (b) True
31. 31.📏 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
32. 32.True or false: voltage is measured in ohms (Ω). (a) False (b) True
33. 33.📏 How many ohms (Ω) is 6 kΩ?
34. 34.Which of these is measured in watts (W)? (a) resistance (b) power (c) how much a part resists (d) the push of a cell
35. 35.True or false: resistance is measured in volts (V). (a) False (b) True
36. 36.True or false: the push of a cell is measured in watts (W). (a) False (b) True
37. 37.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
38. 38.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
39. 39.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
40. 40.📏 How many milliamperes (mA) is 2.24 A?

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