Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 499 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
2. 2.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
3. 3.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
4. 4.📏 How many amperes (A) is 1470 mA? =
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
6. 6.📏 How many kilo-ohms (kΩ) is 6200 Ω? =
7. 7.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
8. 8.True or false: the ammeter is joined across a part. (a) True (b) False
9. 9.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
10. 10.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
11. 11.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
12. 12.📏 How many ohms (Ω) is 7.1 kΩ?
13. 13.True or false: current is measured in amperes (A). (a) True (b) False
14. 14.📏 How many milliamperes (mA) is 0.89 A?
15. 15.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
16. 16.📏 How many amperes (A) is 1020 mA? =
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
18. 18.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
19. 19.True or false: power is measured in watts (W). (a) False (b) True
20. 20.📏 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
21. 21.Which of these is measured in ohms (Ω)? (a) resistance (b) power (c) the flow of charge (d) the push of a cell
22. 22.True or false: the voltmeter is joined across a part. (a) False (b) True
23. 23.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
24. 24.True or false: the ammeter measures voltage. (a) False (b) True
25. 25.True or false: resistance is measured in watts (W). (a) False (b) True
26. 26.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) current
27. 27.📏 How many amperes (A) is 2430 mA? =
28. 28.📏 How many watts (W) is 2.8 kW?
29. 29.📏 How many kilowatts (kW) is 1400 W? =
30. 30.True or false: current is measured in ohms (Ω). (a) True (b) False
31. 31.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
32. 32.Which of these is measured in amperes (A)? (a) the push of a cell (b) power (c) voltage (d) current
33. 33.📏 How many watts (W) is 4 kW?
34. 34.True or false: voltage is measured in ohms (Ω). (a) False (b) True
35. 35.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) the flow of charge (d) the push of a cell
36. 36.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
37. 37.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
38. 38.True or false: the voltmeter measures current. (a) True (b) False
39. 39.📏 How many amperes (A) is 760 mA? =
40. 40.📏 How many ohms (Ω) is 6.4 kΩ?

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