Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 977 · 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 2.02 A?
2. 2.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
3. 3.True or false: voltage is measured in amperes (A). (a) True (b) False
4. 4.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) resistance (d) voltage
5. 5.True or false: energy used each second is measured in watts (W). (a) True (b) False
6. 6.📏 How many milliamperes (mA) is 2.19 A?
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
8. 8.True or false: the ammeter measures voltage. (a) True (b) False
9. 9.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
10. 10.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
11. 11.📏 How many watts (W) is 2.1 kW?
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
13. 13.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
14. 14.Which of these is measured in volts (V)? (a) resistance (b) energy used each second (c) the push of a cell (d) how much a part resists
15. 15.True or false: the voltmeter is joined in series. (a) False (b) True
16. 16.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) voltage (d) energy used each second
17. 17.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the tap handle (d) the water tank lid
18. 18.True or false: the voltmeter is joined across a part. (a) False (b) True
19. 19.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) voltage (c) how much a part resists (d) energy used each second
20. 20.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
21. 21.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
22. 22.📏 How many amperes (A) is 640 mA? =
23. 23.True or false: resistance is measured in amperes (A). (a) False (b) True
24. 24.📏 How many amperes (A) is 1490 mA? =
25. 25.📏 How many kilowatts (kW) is 4700 W? =
26. 26.True or false: power is measured in ohms (Ω). (a) False (b) True
27. 27.True or false: the voltmeter measures voltage. (a) False (b) True
28. 28.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
29. 29.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
30. 30.📏 How many kilowatts (kW) is 4800 W? =
31. 31.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
32. 32.Which of these is measured in watts (W)? (a) power (b) current (c) the flow of charge (d) how much a part resists
33. 33.Which of these is measured in volts (V)? (a) power (b) current (c) resistance (d) voltage
34. 34.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
35. 35.📏 How many ohms (Ω) is 0.9 kΩ?
36. 36.True or false: the ammeter measures current. (a) True (b) False
37. 37.True or false: the push of a cell is measured in volts (V). (a) False (b) True
38. 38.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
39. 39.📏 How many kilowatts (kW) is 4300 W? =
40. 40.Which of these is measured in amperes (A)? (a) power (b) how much a part resists (c) the flow of charge (d) voltage

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