Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 263 · 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 milliamperes (mA) is 2.5 A?
2. 2.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
3. 3.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
4. 4.📏 How many milliamperes (mA) is 0.58 A?
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
7. 7.True or false: voltage is measured in watts (W). (a) True (b) False
8. 8.📏 How many milliamperes (mA) is 1.42 A?
9. 9.📏 How many milliamperes (mA) is 1.13 A?
10. 10.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) energy used each second (d) the flow of charge
11. 11.True or false: resistance is measured in amperes (A). (a) False (b) True
12. 12.Which of these is measured in amperes (A)? (a) the push of a cell (b) energy used each second (c) power (d) current
13. 13.True or false: the ammeter is joined in series. (a) True (b) False
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
15. 15.📏 How many milliamperes (mA) is 0.17 A?
16. 16.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
17. 17.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
18. 18.Which of these is measured in volts (V)? (a) current (b) power (c) the flow of charge (d) the push of a cell
19. 19.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
20. 20.📏 How many kilowatts (kW) is 2150 W? =
21. 21.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
22. 22.📏 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
23. 23.📏 How many ohms (Ω) is 0.3 kΩ?
24. 24.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) voltage (d) the push of a cell
25. 25.True or false: the voltmeter is joined in series. (a) False (b) True
26. 26.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
27. 27.📏 How many milliamperes (mA) is 2.4 A?
28. 28.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
29. 29.True or false: the voltmeter is joined across a part. (a) False (b) True
30. 30.📏 How many ohms (Ω) is 1.4 kΩ?
31. 31.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
32. 32.📏 How many watts (W) is 0.2 kW?
33. 33.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
34. 34.📏 How many watts (W) is 4.6 kW?
35. 35.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
36. 36.True or false: the voltmeter measures voltage. (a) False (b) True
37. 37.True or false: the ammeter measures voltage. (a) True (b) False
38. 38.📏 How many ohms (Ω) is 3.3 kΩ?
39. 39.True or false: power is measured in amperes (A). (a) True (b) False
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