Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 751 · 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.True or false: the ammeter is joined across a part. (a) True (b) False
2. 2.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) the flow of charge (d) resistance
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
4. 4.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
5. 5.Which of these is measured in watts (W)? (a) current (b) the flow of charge (c) voltage (d) energy used each second
6. 6.True or false: voltage is measured in watts (W). (a) True (b) False
7. 7.True or false: the voltmeter is joined across a part. (a) False (b) True
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
9. 9.📏 How many milliamperes (mA) is 1.68 A?
10. 10.📏 How many milliamperes (mA) is 2.95 A?
11. 11.📏 How many milliamperes (mA) is 0.85 A?
12. 12.Which of these is measured in volts (V)? (a) power (b) voltage (c) resistance (d) current
13. 13.📏 How many watts (W) is 2.2 kW?
14. 14.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
15. 15.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
16. 16.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
17. 17.True or false: the ammeter measures voltage. (a) True (b) False
18. 18.📏 How many amperes (A) is 2520 mA? =
19. 19.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
20. 20.📏 How many kilo-ohms (kΩ) is 1700 Ω? =
21. 21.📏 How many watts (W) is 4.9 kW?
22. 22.📏 How many amperes (A) is 2390 mA? =
23. 23.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) power (d) current
24. 24.Which of these is measured in amperes (A)? (a) current (b) resistance (c) how much a part resists (d) the push of a cell
25. 25.True or false: resistance is measured in volts (V). (a) True (b) False
26. 26.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
27. 27.True or false: the push of a cell is measured in volts (V). (a) True (b) False
28. 28.📏 How many milliamperes (mA) is 0.49 A?
29. 29.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
30. 30.Which of these is measured in ohms (Ω)? (a) energy used each second (b) power (c) resistance (d) the push of a cell
31. 31.📏 How many milliamperes (mA) is 0.14 A?
32. 32.📏 How many watts (W) is 5 kW?
33. 33.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
34. 34.📏 How many milliamperes (mA) is 2.1 A?
35. 35.True or false: the ammeter measures current. (a) True (b) False
36. 36.True or false: energy used each second is measured in amperes (A). (a) True (b) False
37. 37.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
38. 38.📏 How many watts (W) is 3.3 kW?
39. 39.📏 How many ohms (Ω) is 4.7 kΩ?
40. 40.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter

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