Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 474 · 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 narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
2. 2.True or false: the ammeter measures voltage. (a) True (b) False
3. 3.True or false: the push of a cell is measured in volts (V). (a) True (b) False
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
5. 5.True or false: the ammeter is joined across a part. (a) False (b) True
6. 6.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
7. 7.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
8. 8.📏 How many kilo-ohms (kΩ) is 6400 Ω? =
9. 9.True or false: current is measured in amperes (A). (a) True (b) False
10. 10.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
11. 11.📏 How many watts (W) is 4.4 kW?
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
13. 13.True or false: the ammeter measures current. (a) False (b) True
14. 14.Which of these is measured in volts (V)? (a) current (b) resistance (c) the push of a cell (d) energy used each second
15. 15.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) voltage (d) power
16. 16.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
17. 17.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
18. 18.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
19. 19.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
20. 20.📏 How many kilo-ohms (kΩ) is 5200 Ω? =
21. 21.📏 How many ohms (Ω) is 1.9 kΩ?
22. 22.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) a narrow pipe (d) the water pressure
23. 23.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
24. 24.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
25. 25.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) power (c) the flow of charge (d) the push of a cell
26. 26.📏 How many milliamperes (mA) is 2.87 A?
27. 27.📏 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
28. 28.True or false: the voltmeter is joined in series. (a) True (b) False
29. 29.True or false: power is measured in amperes (A). (a) False (b) True
30. 30.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
31. 31.True or false: power is measured in volts (V). (a) True (b) False
32. 32.📏 How many ohms (Ω) is 9 kΩ?
33. 33.📏 How many kilowatts (kW) is 450 W? =
34. 34.📏 How many amperes (A) is 2480 mA? =
35. 35.📏 How many milliamperes (mA) is 0.23 A?
36. 36.📏 How many amperes (A) is 610 mA? =
37. 37.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) power (d) the flow of charge
38. 38.True or false: the voltmeter measures current. (a) False (b) True
39. 39.📏 How many watts (W) is 3.6 kW?
40. 40.📏 How many ohms (Ω) is 9.9 kΩ?

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