Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 54 · 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 milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
2. 2.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
3. 3.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
5. 5.📏 How many kilowatts (kW) is 2550 W? =
6. 6.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
7. 7.📏 How many amperes (A) is 1180 mA? =
8. 8.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) the flow of charge (d) how much a part resists
9. 9.True or false: voltage is measured in amperes (A). (a) False (b) True
10. 10.📏 How many kilowatts (kW) is 5000 W? =
11. 11.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
12. 12.Which of these is measured in amperes (A)? (a) energy used each second (b) the push of a cell (c) the flow of charge (d) power
13. 13.📏 How many ohms (Ω) is 2.2 kΩ?
14. 14.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
15. 15.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
18. 18.📏 How many milliamperes (mA) is 0.4 A?
19. 19.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) how much a part resists (d) resistance
20. 20.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
21. 21.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 1024 (d) 100
22. 22.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
23. 23.📏 How many milliamperes (mA) is 0.89 A?
24. 24.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
25. 25.📏 How many watts (W) is 0.8 kW?
26. 26.📏 How many amperes (A) is 1110 mA? =
27. 27.📏 How many amperes (A) is 1620 mA? =
28. 28.True or false: current is measured in amperes (A). (a) False (b) True
29. 29.True or false: the ammeter measures current. (a) True (b) False
30. 30.📏 How many watts (W) is 1.1 kW?
31. 31.True or false: the voltmeter measures current. (a) True (b) False
32. 32.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
33. 33.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
34. 34.True or false: how much a part resists is measured in watts (W). (a) True (b) False
35. 35.📏 How many amperes (A) is 370 mA? =
36. 36.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) voltage (d) energy used each second
37. 37.Which of these is measured in volts (V)? (a) voltage (b) power (c) current (d) the flow of charge
38. 38.True or false: the ammeter is joined across a part. (a) False (b) True
39. 39.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) voltage (d) resistance
40. 40.📏 How many milliamperes (mA) is 0.67 A?

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