Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 14 · 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.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
2. 2.📏 How many amperes (A) is 2860 mA? =
3. 3.📏 How many watts (W) is 2.7 kW?
4. 4.📏 How many milliamperes (mA) is 0.07 A?
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
6. 6.📏 How many ohms (Ω) is 7 kΩ?
7. 7.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
8. 8.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
9. 9.Which of these is measured in watts (W)? (a) the flow of charge (b) resistance (c) power (d) voltage
10. 10.True or false: current is measured in volts (V). (a) False (b) True
11. 11.True or false: voltage is measured in amperes (A). (a) False (b) True
12. 12.📏 How many milliamperes (mA) is 2.04 A?
13. 13.True or false: the flow of charge is measured in volts (V). (a) True (b) False
14. 14.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) the flow of charge (d) energy used each second
15. 15.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
16. 16.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
17. 17.True or false: current is measured in watts (W). (a) False (b) True
18. 18.True or false: the ammeter measures voltage. (a) False (b) True
19. 19.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
20. 20.True or false: the ammeter is joined across a part. (a) True (b) False
21. 21.📏 How many watts (W) is 2.3 kW?
22. 22.Which of these is measured in amperes (A)? (a) energy used each second (b) the push of a cell (c) resistance (d) the flow of charge
23. 23.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
24. 24.True or false: the ammeter measures current. (a) True (b) False
25. 25.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) how much a part resists (d) energy used each second
26. 26.📏 How many ohms (Ω) is 6.4 kΩ?
27. 27.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
28. 28.True or false: energy used each second is measured in watts (W). (a) False (b) True
29. 29.Which of these is measured in volts (V)? (a) how much a part resists (b) energy used each second (c) voltage (d) current
30. 30.📏 How many ohms (Ω) is 1.3 kΩ?
31. 31.📏 How many amperes (A) is 570 mA? =
32. 32.True or false: voltage is measured in volts (V). (a) True (b) False
33. 33.📏 How many kilowatts (kW) is 550 W? =
34. 34.True or false: energy used each second is measured in amperes (A). (a) True (b) False
35. 35.📏 How many amperes (A) is 1000 mA? =
36. 36.📏 How many watts (W) is 1.7 kW?
37. 37.True or false: the ammeter is joined in series. (a) True (b) False
38. 38.True or false: the voltmeter measures current. (a) True (b) False
39. 39.📏 How many watts (W) is 1.1 kW?
40. 40.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) energy used each second (d) resistance

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