Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 299 · 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 480 mA? =
2. 2.True or false: current is measured in ohms (Ω). (a) True (b) False
3. 3.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
4. 4.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
5. 5.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
6. 6.Which of these is measured in volts (V)? (a) how much a part resists (b) energy used each second (c) current (d) the push of a cell
7. 7.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
8. 8.Which of these is measured in amperes (A)? (a) energy used each second (b) power (c) resistance (d) current
9. 9.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) the flow of charge (d) how much a part resists
10. 10.True or false: the voltmeter measures current. (a) False (b) True
11. 11.True or false: the ammeter measures current. (a) True (b) False
12. 12.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
14. 14.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
15. 15.📏 How many amperes (A) is 750 mA? =
16. 16.📏 How many milliamperes (mA) is 1.89 A?
17. 17.📏 How many kilowatts (kW) is 4150 W? =
18. 18.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
19. 19.True or false: the voltmeter is joined across a part. (a) True (b) False
20. 20.Which of these is measured in watts (W)? (a) voltage (b) power (c) resistance (d) the flow of charge
21. 21.📏 How many milliamperes (mA) is 2.49 A?
22. 22.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
23. 23.📏 How many milliamperes (mA) is 2.1 A?
24. 24.📏 How many amperes (A) is 120 mA? =
25. 25.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the pipe colour (d) the tap handle
26. 26.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
27. 27.True or false: the ammeter measures voltage. (a) True (b) False
28. 28.📏 How many milliamperes (mA) is 1.65 A?
29. 29.📏 How many kilowatts (kW) is 3650 W? =
30. 30.📏 How many kilo-ohms (kΩ) is 5700 Ω? =
31. 31.True or false: the voltmeter is joined in series. (a) True (b) False
32. 32.Which of these is measured in ohms (Ω)? (a) power (b) the push of a cell (c) how much a part resists (d) energy used each second
33. 33.📏 How many kilowatts (kW) is 2550 W? =
34. 34.True or false: the ammeter is joined across a part. (a) True (b) False
35. 35.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
36. 36.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) energy used each second (d) the flow of charge
37. 37.True or false: the ammeter is joined in series. (a) True (b) False
38. 38.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
39. 39.📏 How many kilo-ohms (kΩ) is 5800 Ω? =
40. 40.Which of these is measured in volts (V)? (a) how much a part resists (b) power (c) voltage (d) the flow of charge

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