Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 680 · 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 watts (W) is 4 kW?
2. 2.📏 How many watts (W) is 0.9 kW?
3. 3.📏 How many ohms (Ω) is 9.3 kΩ?
4. 4.📏 How many amperes (A) is 230 mA? =
5. 5.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
6. 6.📏 How many amperes (A) is 1320 mA? =
7. 7.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) how much a part resists (d) the flow of charge
8. 8.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
9. 9.📏 How many amperes (A) is 910 mA? =
10. 10.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
12. 12.True or false: the voltmeter measures current. (a) False (b) True
13. 13.True or false: current is measured in amperes (A). (a) True (b) False
14. 14.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
15. 15.📏 How many amperes (A) is 570 mA? =
16. 16.True or false: the ammeter is joined in series. (a) True (b) False
17. 17.True or false: power is measured in watts (W). (a) True (b) False
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
19. 19.True or false: voltage is measured in volts (V). (a) True (b) False
20. 20.True or false: the voltmeter measures voltage. (a) False (b) True
21. 21.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) power (d) the flow of charge
22. 22.📏 How many ohms (Ω) is 5.7 kΩ?
23. 23.📏 How many amperes (A) is 550 mA? =
24. 24.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
25. 25.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
26. 26.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
27. 27.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) power (d) resistance
28. 28.True or false: the voltmeter is joined across a part. (a) False (b) True
29. 29.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
30. 30.📏 How many amperes (A) is 450 mA? =
31. 31.True or false: the ammeter measures current. (a) True (b) False
32. 32.📏 How many kilowatts (kW) is 3400 W? =
33. 33.Which of these is measured in watts (W)? (a) energy used each second (b) resistance (c) current (d) the push of a cell
34. 34.📏 How many ohms (Ω) is 4.1 kΩ?
35. 35.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
36. 36.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
37. 37.True or false: resistance is measured in ohms (Ω). (a) True (b) False
38. 38.📏 How many kilowatts (kW) is 1850 W? =
39. 39.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
40. 40.True or false: the ammeter is joined across a part. (a) False (b) True

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