Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 203 · 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.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
2. 2.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) the pipe colour
4. 4.True or false: the voltmeter is joined in series. (a) True (b) False
5. 5.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) resistance (d) energy used each second
6. 6.📏 How many milliamperes (mA) is 0.23 A?
7. 7.True or false: energy used each second is measured in amperes (A). (a) True (b) False
8. 8.Which of these is measured in ohms (Ω)? (a) power (b) the flow of charge (c) current (d) how much a part resists
9. 9.True or false: the ammeter measures voltage. (a) False (b) True
10. 10.📏 How many ohms (Ω) is 4.1 kΩ?
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
12. 12.Which of these is measured in amperes (A)? (a) resistance (b) current (c) voltage (d) power
13. 13.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
14. 14.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
15. 15.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
16. 16.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
17. 17.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
18. 18.True or false: how much a part resists is measured in volts (V). (a) False (b) True
19. 19.📏 How many milliamperes (mA) is 0.03 A?
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
21. 21.📏 How many milliamperes (mA) is 1.17 A?
22. 22.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
23. 23.True or false: power is measured in ohms (Ω). (a) True (b) False
24. 24.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
25. 25.📏 How many watts (W) is 0.6 kW?
26. 26.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) voltage
27. 27.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
28. 28.True or false: voltage is measured in volts (V). (a) True (b) False
29. 29.True or false: voltage is measured in ohms (Ω). (a) False (b) True
30. 30.📏 How many kilowatts (kW) is 3550 W? =
31. 31.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) the flow of charge (d) how much a part resists
32. 32.📏 How many watts (W) is 4.5 kW?
33. 33.📏 How many amperes (A) is 2810 mA? =
34. 34.📏 How many milliamperes (mA) is 2.54 A?
35. 35.📏 How many amperes (A) is 1440 mA? =
36. 36.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
37. 37.Which of these is measured in volts (V)? (a) power (b) voltage (c) the flow of charge (d) current
38. 38.📏 How many milliamperes (mA) is 0.77 A?
39. 39.📏 How many amperes (A) is 2780 mA? =
40. 40.True or false: the flow of charge is measured in amperes (A). (a) True (b) False

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