Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 669 · 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 watts (W) is 2.4 kW?
2. 2.True or false: voltage is measured in volts (V). (a) True (b) False
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
4. 4.📏 How many watts (W) is 0.5 kW?
5. 5.True or false: voltage is measured in ohms (Ω). (a) True (b) False
6. 6.Which of these is measured in ohms (Ω)? (a) resistance (b) current (c) energy used each second (d) power
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.📏 How many ohms (Ω) is 4 kΩ?
9. 9.True or false: how much a part resists is measured in watts (W). (a) True (b) False
10. 10.True or false: the push of a cell is measured in volts (V). (a) False (b) True
11. 11.True or false: resistance is measured in ohms (Ω). (a) True (b) False
12. 12.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
13. 13.📏 How many ohms (Ω) is 7.3 kΩ?
14. 14.True or false: current is measured in amperes (A). (a) True (b) False
15. 15.Which of these is measured in volts (V)? (a) power (b) resistance (c) how much a part resists (d) voltage
16. 16.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
17. 17.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
18. 18.True or false: the ammeter measures voltage. (a) True (b) False
19. 19.True or false: the flow of charge is measured in watts (W). (a) True (b) False
20. 20.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
21. 21.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
22. 22.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) how much a part resists (d) the flow of charge
23. 23.📏 How many watts (W) is 3.4 kW?
24. 24.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
25. 25.📏 How many kilowatts (kW) is 1200 W? =
26. 26.📏 How many ohms (Ω) is 6.1 kΩ?
27. 27.📏 How many kilo-ohms (kΩ) is 100 Ω? =
28. 28.Which of these is measured in amperes (A)? (a) current (b) voltage (c) power (d) the push of a cell
29. 29.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
30. 30.True or false: the voltmeter measures voltage. (a) False (b) True
31. 31.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) voltage (d) power
32. 32.True or false: the ammeter is joined across a part. (a) True (b) False
33. 33.📏 How many watts (W) is 3.7 kW?
34. 34.True or false: the voltmeter is joined in series. (a) True (b) False
35. 35.📏 How many ohms (Ω) is 6.4 kΩ?
36. 36.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
37. 37.📏 How many kilowatts (kW) is 4150 W? =
38. 38.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
39. 39.📏 How many amperes (A) is 940 mA? =
40. 40.True or false: the ammeter is joined in series. (a) False (b) True

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