Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 65 · 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 pipe colour (b) the flow of water (c) a narrow pipe (d) the water pressure
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
3. 3.📏 How many ohms (Ω) is 6.2 kΩ?
4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
5. 5.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
6. 6.True or false: the voltmeter is joined across a part. (a) False (b) True
7. 7.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
8. 8.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) how much a part resists (d) power
9. 9.True or false: the ammeter measures voltage. (a) True (b) False
10. 10.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) current (d) energy used each second
11. 11.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
12. 12.True or false: the voltmeter is joined in series. (a) False (b) True
13. 13.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
14. 14.True or false: resistance is measured in amperes (A). (a) False (b) True
15. 15.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 10 (d) 100
17. 17.📏 How many amperes (A) is 340 mA? =
18. 18.True or false: voltage is measured in volts (V). (a) True (b) False
19. 19.True or false: voltage is measured in watts (W). (a) True (b) False
20. 20.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
21. 21.📏 How many ohms (Ω) is 8.9 kΩ?
22. 22.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) current (d) the push of a cell
23. 23.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
24. 24.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
25. 25.True or false: voltage is measured in ohms (Ω). (a) False (b) True
26. 26.True or false: the ammeter measures current. (a) True (b) False
27. 27.📏 How many kilo-ohms (kΩ) is 100 Ω? =
28. 28.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
29. 29.📏 How many amperes (A) is 2700 mA? =
30. 30.📏 How many milliamperes (mA) is 2.3 A?
31. 31.True or false: the voltmeter measures voltage. (a) True (b) False
32. 32.True or false: the ammeter is joined in series. (a) True (b) False
33. 33.📏 How many kilo-ohms (kΩ) is 400 Ω? =
34. 34.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) voltage (d) how much a part resists
35. 35.📏 How many kilowatts (kW) is 550 W? =
36. 36.📏 How many milliamperes (mA) is 1.91 A?
37. 37.True or false: the voltmeter measures current. (a) False (b) True
38. 38.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
39. 39.📏 How many watts (W) is 1.4 kW?
40. 40.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10

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