Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 685 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
2. 2.True or false: the voltmeter measures voltage. (a) False (b) True
3. 3.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) power (d) resistance
4. 4.📏 How many watts (W) is 4.3 kW?
5. 5.True or false: power is measured in watts (W). (a) True (b) False
6. 6.📏 How many kilo-ohms (kΩ) is 100 Ω? =
7. 7.📏 How many watts (W) is 3.6 kW?
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the water pressure (d) the flow of water
9. 9.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
10. 10.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
11. 11.True or false: the flow of charge is measured in volts (V). (a) False (b) True
12. 12.True or false: the voltmeter is joined across a part. (a) False (b) True
13. 13.📏 How many ohms (Ω) is 2.6 kΩ?
14. 14.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
15. 15.True or false: the ammeter measures voltage. (a) False (b) True
16. 16.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
17. 17.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
18. 18.📏 How many watts (W) is 3.9 kW?
19. 19.📏 How many kilowatts (kW) is 4300 W? =
20. 20.Which of these is measured in volts (V)? (a) the push of a cell (b) resistance (c) current (d) power
21. 21.📏 How many ohms (Ω) is 2.3 kΩ?
22. 22.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) the flow of charge (d) how much a part resists
23. 23.Which of these is measured in ohms (Ω)? (a) resistance (b) the flow of charge (c) the push of a cell (d) voltage
24. 24.📏 How many ohms (Ω) is 6.3 kΩ?
25. 25.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
26. 26.📏 How many amperes (A) is 270 mA? =
27. 27.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
28. 28.Which of these is measured in ohms (Ω)? (a) power (b) voltage (c) current (d) how much a part resists
29. 29.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
30. 30.📏 How many milliamperes (mA) is 0.59 A?
31. 31.📏 How many milliamperes (mA) is 1.32 A?
32. 32.📏 How many milliamperes (mA) is 1.73 A?
33. 33.📏 How many kilo-ohms (kΩ) is 1000 Ω? =
34. 34.True or false: energy used each second is measured in volts (V). (a) True (b) False
35. 35.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
36. 36.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
37. 37.True or false: the ammeter is joined in series. (a) False (b) True
38. 38.True or false: the ammeter is joined across a part. (a) False (b) True
39. 39.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
40. 40.True or false: the voltmeter measures current. (a) False (b) True

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