Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 794 · 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 milliamperes (mA) is 0.11 A?
2. 2.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
3. 3.True or false: the ammeter measures voltage. (a) True (b) False
4. 4.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
6. 6.Which of these is measured in watts (W)? (a) power (b) resistance (c) current (d) the push of a cell
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
8. 8.True or false: the ammeter is joined across a part. (a) True (b) False
9. 9.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
10. 10.True or false: the voltmeter measures voltage. (a) False (b) True
11. 11.True or false: the voltmeter is joined in series. (a) True (b) False
12. 12.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
13. 13.True or false: the push of a cell is measured in watts (W). (a) True (b) False
14. 14.True or false: voltage is measured in volts (V). (a) False (b) True
15. 15.True or false: the ammeter measures current. (a) False (b) True
16. 16.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
17. 17.Which of these is measured in volts (V)? (a) current (b) resistance (c) the flow of charge (d) the push of a cell
18. 18.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
19. 19.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) current (d) resistance
20. 20.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
21. 21.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
22. 22.📏 How many kilo-ohms (kΩ) is 4100 Ω? =
23. 23.Which of these is measured in volts (V)? (a) current (b) power (c) how much a part resists (d) voltage
24. 24.True or false: current is measured in amperes (A). (a) False (b) True
25. 25.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
26. 26.📏 How many watts (W) is 2.8 kW?
27. 27.📏 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
28. 28.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
29. 29.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) current (d) voltage
30. 30.True or false: the push of a cell is measured in volts (V). (a) False (b) True
31. 31.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
32. 32.True or false: voltage is measured in watts (W). (a) True (b) False
33. 33.True or false: the voltmeter measures current. (a) True (b) False
34. 34.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
35. 35.📏 How many amperes (A) is 1210 mA? =
36. 36.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
37. 37.📏 How many milliamperes (mA) is 0.94 A?
38. 38.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the push of a cell (c) current (d) voltage
39. 39.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) energy used each second (d) the push of a cell
40. 40.📏 How many watts (W) is 3.5 kW?

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