Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 774 · 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.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
2. 2.True or false: current is measured in amperes (A). (a) True (b) False
3. 3.True or false: power is measured in watts (W). (a) True (b) False
4. 4.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
5. 5.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
6. 6.📏 How many kilowatts (kW) is 1000 W? =
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
8. 8.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
9. 9.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
10. 10.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
11. 11.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
12. 12.📏 How many milliamperes (mA) is 2.79 A?
13. 13.📏 How many kilowatts (kW) is 4900 W? =
14. 14.📏 How many ohms (Ω) is 3.2 kΩ?
15. 15.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) resistance (d) energy used each second
16. 16.📏 How many amperes (A) is 2290 mA? =
17. 17.True or false: voltage is measured in volts (V). (a) False (b) True
18. 18.True or false: the voltmeter is joined across a part. (a) True (b) False
19. 19.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
20. 20.True or false: the ammeter measures voltage. (a) True (b) False
21. 21.True or false: the flow of charge is measured in volts (V). (a) True (b) False
22. 22.📏 How many amperes (A) is 1130 mA? =
23. 23.📏 How many milliamperes (mA) is 0.45 A?
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
25. 25.True or false: voltage is measured in ohms (Ω). (a) True (b) False
26. 26.📏 How many milliamperes (mA) is 2.55 A?
27. 27.📏 How many amperes (A) is 220 mA? =
28. 28.True or false: resistance is measured in volts (V). (a) False (b) True
29. 29.Which of these is measured in watts (W)? (a) resistance (b) power (c) how much a part resists (d) the push of a cell
30. 30.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
31. 31.📏 How many ohms (Ω) is 6.1 kΩ?
32. 32.📏 How many milliamperes (mA) is 1.12 A?
33. 33.True or false: the ammeter is joined in series. (a) False (b) True
34. 34.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
35. 35.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
36. 36.📏 How many milliamperes (mA) is 1.77 A?
37. 37.📏 How many kilowatts (kW) is 4800 W? =
38. 38.📏 How many milliamperes (mA) is 1.2 A?
39. 39.📏 How many milliamperes (mA) is 2.51 A?
40. 40.Which of these is measured in amperes (A)? (a) the push of a cell (b) energy used each second (c) how much a part resists (d) the flow of charge

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