Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 696 · 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) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
2. 2.📏 How many watts (W) is 4.2 kW?
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
4. 4.📏 How many kilowatts (kW) is 3200 W? =
5. 5.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
6. 6.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
7. 7.📏 How many amperes (A) is 2720 mA? =
8. 8.📏 How many ohms (Ω) is 2.4 kΩ?
9. 9.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
10. 10.True or false: the ammeter is joined in series. (a) True (b) False
11. 11.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
13. 13.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
14. 14.True or false: the ammeter is joined across a part. (a) False (b) True
15. 15.📏 How many milliamperes (mA) is 2.36 A?
16. 16.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
17. 17.Which of these is measured in watts (W)? (a) power (b) how much a part resists (c) the push of a cell (d) current
18. 18.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
19. 19.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
20. 20.True or false: the voltmeter measures voltage. (a) False (b) True
21. 21.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
22. 22.True or false: power is measured in amperes (A). (a) True (b) False
23. 23.📏 How many kilo-ohms (kΩ) is 10000 Ω? =
24. 24.True or false: the ammeter measures current. (a) False (b) True
25. 25.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
26. 26.📏 How many ohms (Ω) is 7.1 kΩ?
27. 27.📏 How many ohms (Ω) is 0.3 kΩ?
28. 28.True or false: current is measured in watts (W). (a) False (b) True
29. 29.Which of these is measured in ohms (Ω)? (a) voltage (b) the push of a cell (c) resistance (d) power
30. 30.True or false: power is measured in watts (W). (a) True (b) False
31. 31.📏 How many watts (W) is 0.8 kW?
32. 32.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
33. 33.📏 How many amperes (A) is 300 mA? =
34. 34.📏 How many kilowatts (kW) is 1500 W? =
35. 35.📏 How many watts (W) is 0.9 kW?
36. 36.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
37. 37.📏 How many kilowatts (kW) is 1850 W? =
38. 38.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
39. 39.True or false: the voltmeter is joined in series. (a) True (b) False
40. 40.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) energy used each second (d) how much a part resists

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