Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 453 · 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 watts (W)? (a) power (b) voltage (c) the push of a cell (d) the flow of charge
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
3. 3.📏 How many milliamperes (mA) is 1.02 A?
4. 4.True or false: the ammeter is joined in series. (a) False (b) True
5. 5.True or false: current is measured in watts (W). (a) True (b) False
6. 6.True or false: the push of a cell is measured in watts (W). (a) True (b) False
7. 7.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
8. 8.Which of these is measured in volts (V)? (a) voltage (b) current (c) energy used each second (d) how much a part resists
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
10. 10.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) power (d) how much a part resists
11. 11.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
12. 12.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
14. 14.True or false: current is measured in amperes (A). (a) True (b) False
15. 15.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
17. 17.True or false: the ammeter measures voltage. (a) True (b) False
18. 18.📏 How many ohms (Ω) is 2.9 kΩ?
19. 19.📏 How many watts (W) is 0.4 kW?
20. 20.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
21. 21.📏 How many amperes (A) is 2890 mA? =
22. 22.📏 How many ohms (Ω) is 5.9 kΩ?
23. 23.True or false: the voltmeter is joined in series. (a) True (b) False
24. 24.📏 How many kilowatts (kW) is 3950 W? =
25. 25.📏 How many milliamperes (mA) is 0.48 A?
26. 26.📏 How many kilowatts (kW) is 3150 W? =
27. 27.📏 How many amperes (A) is 260 mA? =
28. 28.📏 How many amperes (A) is 2150 mA? =
29. 29.True or false: the voltmeter measures voltage. (a) False (b) True
30. 30.📏 How many kilo-ohms (kΩ) is 6900 Ω? =
31. 31.True or false: resistance is measured in volts (V). (a) False (b) True
32. 32.Which of these is measured in amperes (A)? (a) the push of a cell (b) current (c) resistance (d) voltage
33. 33.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) resistance (d) the push of a cell
34. 34.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
35. 35.True or false: the voltmeter measures current. (a) True (b) False
36. 36.True or false: voltage is measured in volts (V). (a) False (b) True
37. 37.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
38. 38.📏 How many amperes (A) is 80 mA? =
39. 39.📏 How many milliamperes (mA) is 0.22 A?
40. 40.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)

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