Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 874 · 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 amperes (A) is 510 mA? =
2. 2.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) how much a part resists (d) the push of a cell
3. 3.📏 How many watts (W) is 4.4 kW?
4. 4.📏 How many milliamperes (mA) is 2.32 A?
5. 5.True or false: resistance is measured in amperes (A). (a) False (b) True
6. 6.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
7. 7.📏 How many kilowatts (kW) is 4650 W? =
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
9. 9.Which of these is measured in ohms (Ω)? (a) power (b) the flow of charge (c) resistance (d) current
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
11. 11.Which of these is measured in volts (V)? (a) resistance (b) current (c) how much a part resists (d) the push of a cell
12. 12.📏 How many kilowatts (kW) is 3200 W? =
13. 13.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) the flow of charge (d) how much a part resists
14. 14.True or false: the voltmeter measures voltage. (a) False (b) True
15. 15.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
16. 16.📏 How many milliamperes (mA) is 1.35 A?
17. 17.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
18. 18.📏 How many milliamperes (mA) is 1.2 A?
19. 19.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
20. 20.📏 How many ohms (Ω) is 5.8 kΩ?
21. 21.True or false: the ammeter is joined in series. (a) False (b) True
22. 22.📏 How many amperes (A) is 1770 mA? =
23. 23.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
24. 24.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
25. 25.📏 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
26. 26.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
27. 27.True or false: the voltmeter is joined across a part. (a) True (b) False
28. 28.True or false: resistance is measured in volts (V). (a) True (b) False
29. 29.True or false: voltage is measured in volts (V). (a) True (b) False
30. 30.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
31. 31.True or false: the ammeter is joined across a part. (a) False (b) True
32. 32.📏 How many milliamperes (mA) is 1.97 A?
33. 33.📏 How many ohms (Ω) is 1 kΩ?
34. 34.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) current (d) power
35. 35.True or false: the voltmeter is joined in series. (a) True (b) False
36. 36.📏 How many amperes (A) is 2260 mA? =
37. 37.📏 How many amperes (A) is 100 mA? =
38. 38.True or false: the ammeter measures current. (a) True (b) False
39. 39.True or false: the ammeter measures voltage. (a) False (b) True
40. 40.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False

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