Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 564 · 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: resistance is measured in ohms (Ω). (a) True (b) False
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
3. 3.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
4. 4.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
5. 5.True or false: the push of a cell is measured in watts (W). (a) True (b) False
6. 6.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) current (d) resistance
7. 7.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) current (d) voltage
8. 8.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
9. 9.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
11. 11.📏 How many amperes (A) is 1500 mA? =
12. 12.True or false: the flow of charge is measured in volts (V). (a) False (b) True
13. 13.📏 How many amperes (A) is 2070 mA? =
14. 14.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
15. 15.True or false: the ammeter measures voltage. (a) False (b) True
16. 16.True or false: the voltmeter measures voltage. (a) True (b) False
17. 17.Which of these is measured in amperes (A)? (a) current (b) resistance (c) power (d) how much a part resists
18. 18.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
19. 19.True or false: the voltmeter is joined across a part. (a) True (b) False
20. 20.Which of these is measured in watts (W)? (a) current (b) resistance (c) voltage (d) power
21. 21.True or false: current is measured in ohms (Ω). (a) False (b) True
22. 22.📏 How many milliamperes (mA) is 0.62 A?
23. 23.📏 How many watts (W) is 2 kW?
24. 24.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
25. 25.True or false: the ammeter is joined across a part. (a) False (b) True
26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
27. 27.True or false: the voltmeter measures current. (a) True (b) False
28. 28.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) power (d) current
29. 29.📏 How many watts (W) is 0.5 kW?
30. 30.True or false: voltage is measured in amperes (A). (a) True (b) False
31. 31.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
32. 32.True or false: how much a part resists is measured in volts (V). (a) True (b) False
33. 33.True or false: the ammeter is joined in series. (a) False (b) True
34. 34.📏 How many milliamperes (mA) is 1.4 A?
35. 35.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
36. 36.📏 How many watts (W) is 2.8 kW?
37. 37.📏 How many ohms (Ω) is 2.5 kΩ?
38. 38.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
39. 39.📏 How many amperes (A) is 2810 mA? =
40. 40.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 10 (d) 100

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