Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 100 · 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.True or false: the voltmeter is joined across a part. (a) True (b) False
2. 2.True or false: power is measured in ohms (Ω). (a) False (b) True
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
4. 4.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
5. 5.Which of these is measured in watts (W)? (a) energy used each second (b) resistance (c) current (d) voltage
6. 6.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
7. 7.True or false: power is measured in amperes (A). (a) False (b) True
8. 8.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
10. 10.📏 How many kilowatts (kW) is 950 W? =
11. 11.📏 How many ohms (Ω) is 8.7 kΩ?
12. 12.True or false: the flow of charge is measured in watts (W). (a) True (b) False
13. 13.📏 How many milliamperes (mA) is 0.81 A?
14. 14.True or false: how much a part resists is measured in watts (W). (a) False (b) True
15. 15.True or false: the ammeter measures voltage. (a) False (b) True
16. 16.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
17. 17.Which of these is measured in watts (W)? (a) how much a part resists (b) current (c) the flow of charge (d) power
18. 18.True or false: the voltmeter measures voltage. (a) True (b) False
19. 19.True or false: resistance is measured in amperes (A). (a) False (b) True
20. 20.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
21. 21.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
22. 22.📏 How many watts (W) is 3.1 kW?
23. 23.📏 How many milliamperes (mA) is 0.8 A?
24. 24.True or false: current is measured in amperes (A). (a) False (b) True
25. 25.True or false: the voltmeter measures current. (a) False (b) True
26. 26.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
27. 27.Which of these is measured in amperes (A)? (a) the flow of charge (b) how much a part resists (c) resistance (d) the push of a cell
28. 28.True or false: resistance is measured in watts (W). (a) False (b) True
29. 29.True or false: the ammeter is joined across a part. (a) False (b) True
30. 30.📏 How many kilowatts (kW) is 2900 W? =
31. 31.📏 How many kilo-ohms (kΩ) is 8500 Ω? =
32. 32.Which of these is measured in ohms (Ω)? (a) resistance (b) energy used each second (c) voltage (d) power
33. 33.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
34. 34.True or false: current is measured in volts (V). (a) True (b) False
35. 35.True or false: the ammeter is joined in series. (a) False (b) True
36. 36.📏 How many kilowatts (kW) is 2650 W? =
37. 37.📏 How many amperes (A) is 2910 mA? =
38. 38.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
39. 39.📏 How many watts (W) is 1.1 kW?
40. 40.📏 How many kilo-ohms (kΩ) is 8900 Ω? =

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