Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 844 · 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, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
2. 2.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
3. 3.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) how much a part resists (d) the flow of charge
4. 4.📏 How many amperes (A) is 600 mA? =
5. 5.📏 How many amperes (A) is 210 mA? =
6. 6.True or false: current is measured in amperes (A). (a) False (b) True
7. 7.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) the push of a cell (d) current
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
10. 10.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
11. 11.📏 How many milliamperes (mA) is 2.64 A?
12. 12.📏 How many kilowatts (kW) is 4600 W? =
13. 13.True or false: voltage is measured in volts (V). (a) True (b) False
14. 14.📏 How many amperes (A) is 480 mA? =
15. 15.📏 How many ohms (Ω) is 3.5 kΩ?
16. 16.True or false: the voltmeter measures voltage. (a) False (b) True
17. 17.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) power (d) the push of a cell
18. 18.📏 How many milliamperes (mA) is 2.84 A?
19. 19.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
20. 20.True or false: the voltmeter is joined across a part. (a) True (b) False
21. 21.📏 How many kilowatts (kW) is 4050 W? =
22. 22.📏 How many watts (W) is 2.9 kW?
23. 23.True or false: the ammeter measures voltage. (a) False (b) True
24. 24.📏 How many ohms (Ω) is 1.3 kΩ?
25. 25.📏 How many kilo-ohms (kΩ) is 3600 Ω? =
26. 26.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
27. 27.📏 How many kilo-ohms (kΩ) is 600 Ω? =
28. 28.📏 How many milliamperes (mA) is 1.02 A?
29. 29.📏 How many kilo-ohms (kΩ) is 3800 Ω? =
30. 30.True or false: the push of a cell is measured in watts (W). (a) False (b) True
31. 31.True or false: energy used each second is measured in watts (W). (a) False (b) True
32. 32.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) the flow of charge (d) power
33. 33.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
34. 34.📏 How many watts (W) is 0.9 kW?
35. 35.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
36. 36.📏 How many watts (W) is 0.4 kW?
37. 37.📏 How many kilowatts (kW) is 2650 W? =
38. 38.📏 How many ohms (Ω) is 4.3 kΩ?
39. 39.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) current (d) voltage
40. 40.True or false: the voltmeter measures current. (a) True (b) False

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