Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 425 · 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 amperes (A) is 1970 mA? =
2. 2.True or false: energy used each second is measured in watts (W). (a) False (b) True
3. 3.📏 How many watts (W) is 2.9 kW?
4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
5. 5.True or false: the push of a cell is measured in volts (V). (a) True (b) False
6. 6.📏 How many kilo-ohms (kΩ) is 2800 Ω? =
7. 7.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
8. 8.📏 How many watts (W) is 0.9 kW?
9. 9.📏 How many amperes (A) is 1260 mA? =
10. 10.📏 How many milliamperes (mA) is 1.68 A?
11. 11.True or false: resistance is measured in watts (W). (a) True (b) False
12. 12.Which of these is measured in amperes (A)? (a) power (b) the flow of charge (c) resistance (d) how much a part resists
13. 13.True or false: current is measured in amperes (A). (a) True (b) False
14. 14.📏 How many ohms (Ω) is 6.8 kΩ?
15. 15.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) current (d) the flow of charge
16. 16.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
17. 17.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
18. 18.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
19. 19.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) energy used each second (d) how much a part resists
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
21. 21.True or false: the ammeter is joined across a part. (a) False (b) True
22. 22.📏 How many milliamperes (mA) is 0.01 A?
23. 23.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 100 (d) 1000
24. 24.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
25. 25.📏 How many watts (W) is 0.4 kW?
26. 26.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
27. 27.True or false: the voltmeter measures voltage. (a) False (b) True
28. 28.📏 How many ohms (Ω) is 2.6 kΩ?
29. 29.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
30. 30.📏 How many kilo-ohms (kΩ) is 7600 Ω? =
31. 31.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
32. 32.📏 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
33. 33.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
34. 34.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
35. 35.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
36. 36.📏 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
37. 37.📏 How many milliamperes (mA) is 2.76 A?
38. 38.📏 How many amperes (A) is 2470 mA? =
39. 39.True or false: the ammeter measures voltage. (a) False (b) True
40. 40.True or false: the voltmeter is joined across a part. (a) False (b) True

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