Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 991 · 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.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
2. 2.True or false: the flow of charge is measured in volts (V). (a) True (b) False
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 1024 (d) 100
4. 4.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
5. 5.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
6. 6.True or false: the ammeter measures voltage. (a) False (b) True
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
8. 8.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
9. 9.📏 How many milliamperes (mA) is 0.66 A?
10. 10.True or false: power is measured in ohms (Ω). (a) True (b) False
11. 11.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
12. 12.📏 How many ohms (Ω) is 8.7 kΩ?
13. 13.Which of these is measured in watts (W)? (a) voltage (b) power (c) the push of a cell (d) current
14. 14.True or false: the voltmeter is joined in series. (a) False (b) True
15. 15.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
16. 16.True or false: resistance is measured in volts (V). (a) False (b) True
17. 17.📏 How many milliamperes (mA) is 2 A?
18. 18.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
19. 19.📏 How many milliamperes (mA) is 2.31 A?
20. 20.True or false: the ammeter is joined in series. (a) False (b) True
21. 21.True or false: voltage is measured in volts (V). (a) True (b) False
22. 22.📏 How many amperes (A) is 50 mA? =
23. 23.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
24. 24.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) power (c) how much a part resists (d) current
25. 25.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
26. 26.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
27. 27.📏 How many watts (W) is 1.5 kW?
28. 28.True or false: the push of a cell is measured in volts (V). (a) True (b) False
29. 29.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) power (c) voltage (d) resistance
30. 30.📏 How many ohms (Ω) is 7.7 kΩ?
31. 31.True or false: the voltmeter measures voltage. (a) False (b) True
32. 32.📏 How many ohms (Ω) is 2.9 kΩ?
33. 33.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
34. 34.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
35. 35.📏 How many milliamperes (mA) is 1.4 A?
36. 36.📏 How many watts (W) is 2.2 kW?
37. 37.True or false: how much a part resists is measured in volts (V). (a) False (b) True
38. 38.📏 How many amperes (A) is 370 mA? =
39. 39.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
40. 40.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) energy used each second (d) current

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