Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 361 · 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 unit measures voltage? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
2. 2.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
3. 3.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) voltage (d) energy used each second
4. 4.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
6. 6.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.True or false: the voltmeter is joined in series. (a) True (b) False
9. 9.📏 How many amperes (A) is 1180 mA? =
10. 10.True or false: resistance is measured in ohms (Ω). (a) False (b) True
11. 11.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
12. 12.True or false: power is measured in ohms (Ω). (a) True (b) False
13. 13.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) the flow of charge (d) energy used each second
14. 14.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
15. 15.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
16. 16.📏 How many amperes (A) is 1760 mA? =
17. 17.Which of these is measured in amperes (A)? (a) resistance (b) current (c) power (d) energy used each second
18. 18.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
19. 19.True or false: the voltmeter measures current. (a) False (b) True
20. 20.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
21. 21.📏 How many watts (W) is 4.7 kW?
22. 22.📏 How many ohms (Ω) is 6.6 kΩ?
23. 23.True or false: the push of a cell is measured in watts (W). (a) False (b) True
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
25. 25.📏 How many kilo-ohms (kΩ) is 9200 Ω? =
26. 26.📏 How many watts (W) is 2.4 kW?
27. 27.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
28. 28.📏 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
29. 29.True or false: the ammeter measures voltage. (a) False (b) True
30. 30.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
31. 31.📏 How many kilo-ohms (kΩ) is 5300 Ω? =
32. 32.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
33. 33.📏 How many amperes (A) is 2280 mA? =
34. 34.True or false: the ammeter is joined in series. (a) False (b) True
35. 35.📏 How many watts (W) is 0.9 kW?
36. 36.📏 How many kilo-ohms (kΩ) is 9400 Ω? =
37. 37.Which of these is measured in watts (W)? (a) power (b) voltage (c) the flow of charge (d) how much a part resists
38. 38.📏 How many kilo-ohms (kΩ) is 6800 Ω? =
39. 39.Which of these is measured in volts (V)? (a) resistance (b) energy used each second (c) the push of a cell (d) how much a part resists
40. 40.True or false: current is measured in ohms (Ω). (a) True (b) False

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