Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 372 · 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) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
2. 2.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
4. 4.Which of these is measured in watts (W)? (a) the flow of charge (b) resistance (c) energy used each second (d) current
5. 5.Which of these is measured in ohms (Ω)? (a) resistance (b) power (c) the flow of charge (d) the push of a cell
6. 6.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
7. 7.True or false: resistance is measured in amperes (A). (a) True (b) False
8. 8.Which of these is measured in amperes (A)? (a) power (b) voltage (c) the push of a cell (d) current
9. 9.📏 How many kilo-ohms (kΩ) is 8700 Ω? =
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
11. 11.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
13. 13.📏 How many milliamperes (mA) is 0.87 A?
14. 14.True or false: the ammeter is joined across a part. (a) True (b) False
15. 15.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
16. 16.Which of these is measured in volts (V)? (a) the push of a cell (b) how much a part resists (c) energy used each second (d) resistance
17. 17.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
18. 18.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) energy used each second (d) how much a part resists
19. 19.True or false: the push of a cell is measured in volts (V). (a) False (b) True
20. 20.True or false: the push of a cell is measured in watts (W). (a) False (b) True
21. 21.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
22. 22.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
23. 23.True or false: voltage is measured in watts (W). (a) True (b) False
24. 24.📏 How many watts (W) is 2.6 kW?
25. 25.True or false: the voltmeter is joined in series. (a) False (b) True
26. 26.True or false: the ammeter measures voltage. (a) True (b) False
27. 27.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
28. 28.True or false: power is measured in ohms (Ω). (a) False (b) True
29. 29.📏 How many milliamperes (mA) is 2.64 A?
30. 30.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
31. 31.True or false: the voltmeter measures current. (a) True (b) False
32. 32.True or false: the ammeter measures current. (a) False (b) True
33. 33.True or false: current is measured in volts (V). (a) False (b) True
34. 34.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
35. 35.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
36. 36.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
37. 37.True or false: resistance is measured in ohms (Ω). (a) False (b) True
38. 38.📏 How many milliamperes (mA) is 0.99 A?
39. 39.📏 How many amperes (A) is 1980 mA? =
40. 40.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 1024 (d) 100

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