Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 291 · 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.True or false: the ammeter is joined in series. (a) False (b) True
2. 2.📏 How many kilowatts (kW) is 1200 W? =
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
4. 4.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
5. 5.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
6. 6.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
7. 7.True or false: the push of a cell is measured in volts (V). (a) True (b) False
8. 8.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
9. 9.📏 How many watts (W) is 4.3 kW?
10. 10.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
11. 11.True or false: current is measured in amperes (A). (a) False (b) True
12. 12.📏 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
13. 13.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
14. 14.Which of these is measured in amperes (A)? (a) energy used each second (b) the push of a cell (c) the flow of charge (d) how much a part resists
15. 15.True or false: current is measured in volts (V). (a) False (b) True
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
17. 17.📏 How many watts (W) is 4.7 kW?
18. 18.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) power (d) resistance
19. 19.True or false: resistance is measured in amperes (A). (a) True (b) False
20. 20.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) a narrow pipe (d) the flow of water
21. 21.True or false: the voltmeter is joined across a part. (a) False (b) True
22. 22.Which of these is measured in ohms (Ω)? (a) current (b) the push of a cell (c) the flow of charge (d) how much a part resists
23. 23.📏 How many amperes (A) is 1440 mA? =
24. 24.📏 How many kilowatts (kW) is 3950 W? =
25. 25.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
26. 26.📏 How many milliamperes (mA) is 1.97 A?
27. 27.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
28. 28.True or false: the ammeter is joined across a part. (a) True (b) False
29. 29.True or false: energy used each second is measured in watts (W). (a) True (b) False
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
31. 31.📏 How many amperes (A) is 730 mA? =
32. 32.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
33. 33.📏 How many watts (W) is 0.9 kW?
34. 34.📏 How many milliamperes (mA) is 0.82 A?
35. 35.📏 How many watts (W) is 0.2 kW?
36. 36.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
37. 37.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
38. 38.📏 How many amperes (A) is 900 mA? =
39. 39.📏 How many watts (W) is 0.5 kW?
40. 40.True or false: power is measured in ohms (Ω). (a) True (b) False

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids