Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 857 · 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 of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) current (d) how much a part resists
2. 2.📏 How many amperes (A) is 70 mA? =
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
4. 4.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
6. 6.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
7. 7.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) energy used each second (d) how much a part resists
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
9. 9.📏 How many ohms (Ω) is 0.8 kΩ?
10. 10.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
11. 11.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) resistance
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
13. 13.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
14. 14.📏 How many amperes (A) is 1920 mA? =
15. 15.True or false: the flow of charge is measured in volts (V). (a) False (b) True
16. 16.True or false: the ammeter measures voltage. (a) False (b) True
17. 17.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
18. 18.📏 How many kilowatts (kW) is 2000 W? =
19. 19.True or false: the ammeter is joined across a part. (a) False (b) True
20. 20.True or false: the ammeter measures current. (a) False (b) True
21. 21.📏 How many watts (W) is 4.5 kW?
22. 22.📏 How many kilowatts (kW) is 3600 W? =
23. 23.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
24. 24.📏 How many kilowatts (kW) is 4550 W? =
25. 25.True or false: the voltmeter measures current. (a) True (b) False
26. 26.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
27. 27.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
28. 28.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
29. 29.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
30. 30.📏 How many milliamperes (mA) is 2.7 A?
31. 31.Which of these is measured in amperes (A)? (a) resistance (b) the flow of charge (c) energy used each second (d) the push of a cell
32. 32.Which of these is measured in watts (W)? (a) the flow of charge (b) resistance (c) voltage (d) power
33. 33.📏 How many kilowatts (kW) is 1450 W? =
34. 34.True or false: the voltmeter is joined across a part. (a) False (b) True
35. 35.📏 How many kilowatts (kW) is 2750 W? =
36. 36.📏 How many amperes (A) is 1400 mA? =
37. 37.📏 How many watts (W) is 3.5 kW?
38. 38.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) power (d) how much a part resists
39. 39.📏 How many watts (W) is 3.8 kW?
40. 40.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)

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