Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 22 · 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 ohms (Ω) is 7.2 kΩ?
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
3. 3.True or false: the voltmeter measures current. (a) False (b) True
4. 4.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
5. 5.Which of these is measured in amperes (A)? (a) how much a part resists (b) resistance (c) voltage (d) current
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
7. 7.True or false: the voltmeter is joined in series. (a) False (b) True
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) a bigger tank (d) the flow of water
9. 9.True or false: voltage is measured in volts (V). (a) False (b) True
10. 10.True or false: the voltmeter is joined across a part. (a) True (b) False
11. 11.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
12. 12.📏 How many milliamperes (mA) is 2.66 A?
13. 13.True or false: resistance is measured in ohms (Ω). (a) False (b) True
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
15. 15.True or false: the push of a cell is measured in volts (V). (a) False (b) True
16. 16.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) the flow of charge (d) voltage
17. 17.Which of these is measured in amperes (A)? (a) the push of a cell (b) power (c) how much a part resists (d) the flow of charge
18. 18.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
19. 19.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) current (d) the flow of charge
20. 20.True or false: the ammeter is joined across a part. (a) True (b) False
21. 21.📏 How many kilo-ohms (kΩ) is 900 Ω? =
22. 22.📏 How many kilo-ohms (kΩ) is 7700 Ω? =
23. 23.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
24. 24.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
25. 25.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
26. 26.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
27. 27.📏 How many ohms (Ω) is 2.2 kΩ?
28. 28.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
29. 29.True or false: resistance is measured in amperes (A). (a) True (b) False
30. 30.📏 How many kilowatts (kW) is 4750 W? =
31. 31.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
32. 32.True or false: the voltmeter measures voltage. (a) False (b) True
33. 33.📏 How many kilowatts (kW) is 2950 W? =
34. 34.Which of these is measured in watts (W)? (a) the push of a cell (b) the flow of charge (c) how much a part resists (d) energy used each second
35. 35.📏 How many watts (W) is 1.2 kW?
36. 36.Which of these is measured in volts (V)? (a) resistance (b) energy used each second (c) current (d) voltage
37. 37.📏 How many watts (W) is 3.5 kW?
38. 38.📏 How many milliamperes (mA) is 2.31 A?
39. 39.True or false: current is measured in watts (W). (a) False (b) True
40. 40.True or false: the ammeter measures current. (a) True (b) False

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