Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 718 · 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 ohms (Ω) is 4.6 kΩ?
2. 2.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 100 (d) 60
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
4. 4.📏 How many amperes (A) is 1560 mA? =
5. 5.True or false: the ammeter is joined in series. (a) False (b) True
6. 6.📏 How many amperes (A) is 2130 mA? =
7. 7.Which of these is measured in amperes (A)? (a) current (b) power (c) energy used each second (d) how much a part resists
8. 8.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
9. 9.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
11. 11.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
12. 12.True or false: how much a part resists is measured in volts (V). (a) True (b) False
13. 13.📏 How many amperes (A) is 1840 mA? =
14. 14.True or false: the ammeter is joined across a part. (a) True (b) False
15. 15.📏 How many amperes (A) is 40 mA? =
16. 16.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
17. 17.True or false: the push of a cell is measured in volts (V). (a) False (b) True
18. 18.📏 How many watts (W) is 2.5 kW?
19. 19.📏 How many watts (W) is 5 kW?
20. 20.True or false: energy used each second is measured in amperes (A). (a) True (b) False
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
22. 22.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
23. 23.📏 How many ohms (Ω) is 1.6 kΩ?
24. 24.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
25. 25.True or false: the push of a cell is measured in watts (W). (a) True (b) False
26. 26.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
27. 27.📏 How many watts (W) is 4.4 kW?
28. 28.True or false: the voltmeter measures voltage. (a) True (b) False
29. 29.📏 How many kilowatts (kW) is 300 W? =
30. 30.📏 How many ohms (Ω) is 1.1 kΩ?
31. 31.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
32. 32.Which of these is measured in watts (W)? (a) voltage (b) resistance (c) the flow of charge (d) energy used each second
33. 33.📏 How many watts (W) is 1.4 kW?
34. 34.True or false: the ammeter measures voltage. (a) False (b) True
35. 35.📏 How many milliamperes (mA) is 0.24 A?
36. 36.📏 How many kilowatts (kW) is 1700 W? =
37. 37.📏 How many watts (W) is 3.6 kW?
38. 38.True or false: voltage is measured in amperes (A). (a) True (b) False
39. 39.Which of these is measured in ohms (Ω)? (a) resistance (b) current (c) voltage (d) energy used each second
40. 40.True or false: current is measured in watts (W). (a) False (b) True

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