Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 996 · 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.True or false: current is measured in ohms (Ω). (a) True (b) False
2. 2.True or false: the voltmeter is joined in series. (a) True (b) False
3. 3.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
4. 4.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
5. 5.📏 How many amperes (A) is 1500 mA? =
6. 6.📏 How many watts (W) is 3.2 kW?
7. 7.📏 How many ohms (Ω) is 9 kΩ?
8. 8.📏 How many kilowatts (kW) is 4000 W? =
9. 9.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
10. 10.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) the flow of charge (d) resistance
11. 11.📏 How many milliamperes (mA) is 1.45 A?
12. 12.📏 How many ohms (Ω) is 8.1 kΩ?
13. 13.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
14. 14.True or false: voltage is measured in watts (W). (a) False (b) True
15. 15.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
16. 16.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
18. 18.📏 How many amperes (A) is 2510 mA? =
19. 19.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
20. 20.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
21. 21.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
22. 22.📏 How many amperes (A) is 1690 mA? =
23. 23.True or false: the ammeter is joined in series. (a) False (b) True
24. 24.📏 How many kilo-ohms (kΩ) is 4300 Ω? =
25. 25.True or false: the voltmeter measures voltage. (a) True (b) False
26. 26.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
27. 27.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
28. 28.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
29. 29.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
30. 30.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) resistance (d) power
31. 31.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
32. 32.📏 How many ohms (Ω) is 8.7 kΩ?
33. 33.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
34. 34.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
35. 35.True or false: the voltmeter is joined across a part. (a) False (b) True
36. 36.📏 How many amperes (A) is 120 mA? =
37. 37.📏 How many kilo-ohms (kΩ) is 8500 Ω? =
38. 38.True or false: power is measured in watts (W). (a) False (b) True
39. 39.📏 How many watts (W) is 4.9 kW?
40. 40.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)

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