Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 185 · 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 push of a cell is measured in amperes (A). (a) True (b) False
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
6. 6.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
7. 7.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
8. 8.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
9. 9.📏 How many milliamperes (mA) is 0.93 A?
10. 10.📏 How many amperes (A) is 1150 mA? =
11. 11.True or false: the ammeter measures voltage. (a) True (b) False
12. 12.True or false: voltage is measured in volts (V). (a) True (b) False
13. 13.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) resistance (d) the flow of charge
14. 14.True or false: the voltmeter is joined across a part. (a) True (b) False
15. 15.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
16. 16.True or false: the ammeter measures current. (a) True (b) False
17. 17.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
18. 18.True or false: resistance is measured in ohms (Ω). (a) False (b) True
19. 19.📏 How many watts (W) is 1 kW?
20. 20.📏 How many ohms (Ω) is 4.9 kΩ?
21. 21.📏 How many milliamperes (mA) is 2.31 A?
22. 22.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
23. 23.True or false: the voltmeter measures voltage. (a) True (b) False
24. 24.📏 How many amperes (A) is 2710 mA? =
25. 25.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
26. 26.📏 How many ohms (Ω) is 4.1 kΩ?
27. 27.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
28. 28.True or false: the ammeter is joined in series. (a) True (b) False
29. 29.True or false: voltage is measured in amperes (A). (a) False (b) True
30. 30.Which of these is measured in amperes (A)? (a) voltage (b) power (c) the flow of charge (d) energy used each second
31. 31.📏 How many milliamperes (mA) is 2.14 A?
32. 32.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
33. 33.True or false: current is measured in amperes (A). (a) False (b) True
34. 34.Which of these is measured in amperes (A)? (a) energy used each second (b) resistance (c) current (d) power
35. 35.True or false: the voltmeter measures current. (a) False (b) True
36. 36.True or false: the voltmeter is joined in series. (a) True (b) False
37. 37.True or false: power is measured in ohms (Ω). (a) True (b) False
38. 38.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
39. 39.📏 How many kilowatts (kW) is 1150 W? =
40. 40.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter

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