Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 522 · 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 of these is measured in watts (W)? (a) current (b) energy used each second (c) voltage (d) how much a part resists
2. 2.True or false: the voltmeter is joined across a part. (a) True (b) False
3. 3.True or false: the ammeter is joined in series. (a) True (b) False
4. 4.📏 How many kilo-ohms (kΩ) is 600 Ω? =
5. 5.📏 How many amperes (A) is 2230 mA? =
6. 6.Which of these is measured in watts (W)? (a) current (b) the flow of charge (c) power (d) how much a part resists
7. 7.📏 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
8. 8.📏 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
9. 9.True or false: the voltmeter measures current. (a) True (b) False
10. 10.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
11. 11.True or false: current is measured in amperes (A). (a) False (b) True
12. 12.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
13. 13.📏 How many kilowatts (kW) is 4500 W? =
14. 14.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
15. 15.True or false: the voltmeter is joined in series. (a) True (b) False
16. 16.True or false: voltage is measured in volts (V). (a) False (b) True
17. 17.True or false: voltage is measured in amperes (A). (a) True (b) False
18. 18.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 1000 (d) 10
19. 19.True or false: the ammeter measures voltage. (a) True (b) False
20. 20.📏 How many kilo-ohms (kΩ) is 5000 Ω? =
21. 21.📏 How many ohms (Ω) is 6.4 kΩ?
22. 22.True or false: how much a part resists is measured in watts (W). (a) False (b) True
23. 23.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) the flow of charge (d) resistance
24. 24.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
25. 25.Which of these is measured in volts (V)? (a) the flow of charge (b) power (c) current (d) voltage
26. 26.True or false: current is measured in watts (W). (a) True (b) False
27. 27.📏 How many milliamperes (mA) is 1.22 A?
28. 28.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
29. 29.📏 How many watts (W) is 2.5 kW?
30. 30.📏 How many amperes (A) is 2030 mA? =
31. 31.📏 How many watts (W) is 0.5 kW?
32. 32.📏 How many watts (W) is 3 kW?
33. 33.📏 How many watts (W) is 0.7 kW?
34. 34.📏 How many ohms (Ω) is 8.9 kΩ?
35. 35.📏 How many watts (W) is 3.3 kW?
36. 36.📏 How many ohms (Ω) is 0.5 kΩ?
37. 37.True or false: the voltmeter measures voltage. (a) False (b) True
38. 38.📏 How many ohms (Ω) is 5.6 kΩ?
39. 39.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) resistance (d) voltage
40. 40.📏 How many amperes (A) is 2320 mA? =

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