Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 695 · 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, resistance is like … (a) a bigger tank (b) the water pressure (c) a narrow pipe (d) the flow of water
2. 2.📏 How many watts (W) is 3.9 kW?
3. 3.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
4. 4.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
5. 5.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
6. 6.📏 How many ohms (Ω) is 9.7 kΩ?
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
9. 9.True or false: the ammeter measures voltage. (a) False (b) True
10. 10.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) the flow of charge (d) how much a part resists
11. 11.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
12. 12.True or false: the voltmeter measures current. (a) True (b) False
13. 13.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
14. 14.📏 How many amperes (A) is 940 mA? =
15. 15.📏 How many kilowatts (kW) is 2650 W? =
16. 16.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 100 (d) 60
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
18. 18.📏 How many amperes (A) is 370 mA? =
19. 19.True or false: power is measured in ohms (Ω). (a) True (b) False
20. 20.📏 How many ohms (Ω) is 7.8 kΩ?
21. 21.True or false: the voltmeter is joined in series. (a) False (b) True
22. 22.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
23. 23.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
24. 24.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
25. 25.Which of these is measured in volts (V)? (a) how much a part resists (b) current (c) power (d) voltage
26. 26.📏 How many watts (W) is 0.9 kW?
27. 27.📏 How many kilo-ohms (kΩ) is 8300 Ω? =
28. 28.📏 How many milliamperes (mA) is 1.81 A?
29. 29.📏 How many ohms (Ω) is 7.4 kΩ?
30. 30.📏 How many ohms (Ω) is 7.1 kΩ?
31. 31.📏 How many ohms (Ω) is 4.4 kΩ?
32. 32.Which of these is measured in watts (W)? (a) current (b) power (c) resistance (d) voltage
33. 33.📏 How many kilowatts (kW) is 1750 W? =
34. 34.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
35. 35.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) energy used each second (d) the push of a cell
36. 36.📏 How many amperes (A) is 2840 mA? =
37. 37.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
38. 38.True or false: the ammeter is joined in series. (a) True (b) False
39. 39.True or false: power is measured in volts (V). (a) True (b) False
40. 40.📏 How many ohms (Ω) is 3.1 kΩ?

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