Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 44 · 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 voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
2. 2.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
3. 3.True or false: current is measured in ohms (Ω). (a) True (b) False
4. 4.📏 How many ohms (Ω) is 3.9 kΩ?
5. 5.📏 How many milliamperes (mA) is 0.38 A?
6. 6.📏 How many kilowatts (kW) is 1600 W? =
7. 7.📏 How many watts (W) is 2.2 kW?
8. 8.📏 How many ohms (Ω) is 3.8 kΩ?
9. 9.True or false: the ammeter is joined in series. (a) False (b) True
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
11. 11.📏 How many ohms (Ω) is 3.6 kΩ?
12. 12.True or false: voltage is measured in amperes (A). (a) False (b) True
13. 13.📏 How many milliamperes (mA) is 1.56 A?
14. 14.📏 How many amperes (A) is 290 mA? =
15. 15.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
16. 16.True or false: how much a part resists is measured in watts (W). (a) True (b) False
17. 17.📏 How many watts (W) is 3.8 kW?
18. 18.Which of these is measured in ohms (Ω)? (a) energy used each second (b) power (c) resistance (d) current
19. 19.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
20. 20.📏 How many amperes (A) is 30 mA? =
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
22. 22.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
23. 23.True or false: power is measured in watts (W). (a) False (b) True
24. 24.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
25. 25.True or false: current is measured in amperes (A). (a) False (b) True
26. 26.True or false: the voltmeter is joined in series. (a) False (b) True
27. 27.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
28. 28.📏 How many kilowatts (kW) is 2100 W? =
29. 29.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) current (d) the push of a cell
30. 30.📏 How many ohms (Ω) is 6.2 kΩ?
31. 31.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
32. 32.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
33. 33.📏 How many milliamperes (mA) is 1.92 A?
34. 34.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
35. 35.True or false: the voltmeter measures voltage. (a) True (b) False
36. 36.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
37. 37.True or false: voltage is measured in watts (W). (a) False (b) True
38. 38.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
39. 39.True or false: the ammeter measures voltage. (a) False (b) True
40. 40.True or false: power is measured in volts (V). (a) False (b) True

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