Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 558 · 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 kilo-ohms (kΩ) is 8400 Ω? =
2. 2.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
4. 4.📏 How many kilowatts (kW) is 1900 W? =
5. 5.📏 How many milliamperes (mA) is 0.07 A?
6. 6.True or false: energy used each second is measured in watts (W). (a) False (b) True
7. 7.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
8. 8.📏 How many ohms (Ω) is 5.6 kΩ?
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
10. 10.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
11. 11.True or false: the voltmeter is joined across a part. (a) False (b) True
12. 12.📏 How many ohms (Ω) is 7.6 kΩ?
13. 13.📏 How many milliamperes (mA) is 2.67 A?
14. 14.📏 How many amperes (A) is 590 mA? =
15. 15.Which of these is measured in watts (W)? (a) voltage (b) current (c) the flow of charge (d) power
16. 16.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
17. 17.📏 How many milliamperes (mA) is 0.33 A?
18. 18.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
19. 19.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
20. 20.📏 How many amperes (A) is 320 mA? =
21. 21.True or false: the ammeter is joined across a part. (a) True (b) False
22. 22.📏 How many kilowatts (kW) is 3550 W? =
23. 23.📏 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
24. 24.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) voltage (d) the flow of charge
25. 25.📏 How many ohms (Ω) is 4.9 kΩ?
26. 26.Which of these is measured in ohms (Ω)? (a) power (b) the push of a cell (c) voltage (d) how much a part resists
27. 27.📏 How many watts (W) is 2.2 kW?
28. 28.📏 How many ohms (Ω) is 0.5 kΩ?
29. 29.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
30. 30.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
31. 31.True or false: the ammeter measures voltage. (a) True (b) False
32. 32.True or false: current is measured in amperes (A). (a) False (b) True
33. 33.True or false: the voltmeter measures voltage. (a) False (b) True
34. 34.📏 How many amperes (A) is 240 mA? =
35. 35.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) voltage (d) current
36. 36.📏 How many amperes (A) is 2640 mA? =
37. 37.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) voltage (d) how much a part resists
38. 38.True or false: the flow of charge is measured in volts (V). (a) True (b) False
39. 39.📏 How many milliamperes (mA) is 0.8 A?
40. 40.📏 How many amperes (A) is 1030 mA? =

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