Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 46 · 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.📏 How many amperes (A) is 2520 mA? =
2. 2.True or false: the ammeter is joined across a part. (a) True (b) False
3. 3.📏 How many kilo-ohms (kΩ) is 2100 Ω? =
4. 4.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) the flow of charge (c) resistance (d) energy used each second
5. 5.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
6. 6.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
7. 7.📏 How many kilowatts (kW) is 3800 W? =
8. 8.Which of these is measured in amperes (A)? (a) energy used each second (b) resistance (c) voltage (d) the flow of charge
9. 9.📏 How many watts (W) is 1.9 kW?
10. 10.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
11. 11.True or false: voltage is measured in ohms (Ω). (a) False (b) True
12. 12.📏 How many milliamperes (mA) is 0.54 A?
13. 13.True or false: the voltmeter measures current. (a) False (b) True
14. 14.True or false: the ammeter is joined in series. (a) True (b) False
15. 15.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
17. 17.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
18. 18.True or false: voltage is measured in watts (W). (a) True (b) False
19. 19.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
20. 20.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
21. 21.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
22. 22.Which of these is measured in amperes (A)? (a) how much a part resists (b) power (c) current (d) resistance
23. 23.📏 How many amperes (A) is 1050 mA? =
24. 24.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
25. 25.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
26. 26.True or false: resistance is measured in ohms (Ω). (a) False (b) True
27. 27.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
28. 28.Which of these is measured in watts (W)? (a) the flow of charge (b) resistance (c) power (d) voltage
29. 29.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
30. 30.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
31. 31.📏 How many milliamperes (mA) is 2.22 A?
32. 32.Which of these is measured in volts (V)? (a) power (b) resistance (c) voltage (d) energy used each second
33. 33.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
34. 34.📏 How many ohms (Ω) is 8.7 kΩ?
35. 35.True or false: the ammeter measures voltage. (a) False (b) True
36. 36.True or false: current is measured in ohms (Ω). (a) False (b) True
37. 37.📏 How many watts (W) is 0.7 kW?
38. 38.📏 How many ohms (Ω) is 6.8 kΩ?
39. 39.📏 How many amperes (A) is 200 mA? =
40. 40.📏 How many milliamperes (mA) is 0.89 A?

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