Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 890 · 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 kilowatts (kW) is 1050 W? =
2. 2.📏 How many milliamperes (mA) is 2.61 A?
3. 3.True or false: voltage is measured in watts (W). (a) True (b) False
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
5. 5.Which of these is measured in volts (V)? (a) current (b) how much a part resists (c) resistance (d) voltage
6. 6.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) current (d) the push of a cell
7. 7.True or false: the ammeter is joined across a part. (a) True (b) False
8. 8.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
9. 9.📏 How many milliamperes (mA) is 0.02 A?
10. 10.📏 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
11. 11.📏 How many milliamperes (mA) is 0.38 A?
12. 12.📏 How many watts (W) is 1.1 kW?
13. 13.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
14. 14.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
15. 15.📏 How many milliamperes (mA) is 0.75 A?
16. 16.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) the push of a cell (d) current
17. 17.📏 How many watts (W) is 2.4 kW?
18. 18.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
19. 19.📏 How many amperes (A) is 70 mA? =
20. 20.📏 How many milliamperes (mA) is 2.74 A?
21. 21.📏 How many milliamperes (mA) is 1.81 A?
22. 22.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) the push of a cell (d) energy used each second
23. 23.📏 How many kilo-ohms (kΩ) is 2000 Ω? =
24. 24.True or false: how much a part resists is measured in volts (V). (a) False (b) True
25. 25.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
26. 26.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) power (d) voltage
27. 27.📏 How many amperes (A) is 810 mA? =
28. 28.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
29. 29.📏 How many amperes (A) is 1630 mA? =
30. 30.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
31. 31.📏 How many milliamperes (mA) is 0.4 A?
32. 32.Which of these is measured in amperes (A)? (a) the flow of charge (b) energy used each second (c) how much a part resists (d) power
33. 33.True or false: the voltmeter measures voltage. (a) False (b) True
34. 34.📏 How many watts (W) is 4.1 kW?
35. 35.📏 How many kilowatts (kW) is 3500 W? =
36. 36.📏 How many kilo-ohms (kΩ) is 5800 Ω? =
37. 37.📏 How many amperes (A) is 1860 mA? =
38. 38.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
39. 39.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
40. 40.📏 How many amperes (A) is 1360 mA? =

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