Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 417 · 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.True or false: the voltmeter measures voltage. (a) False (b) True
2. 2.True or false: current is measured in amperes (A). (a) True (b) False
3. 3.📏 How many watts (W) is 1.6 kW?
4. 4.True or false: current is measured in watts (W). (a) True (b) False
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
6. 6.True or false: the ammeter is joined in series. (a) False (b) True
7. 7.Which of these is measured in amperes (A)? (a) current (b) energy used each second (c) how much a part resists (d) voltage
8. 8.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
9. 9.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
10. 10.📏 How many milliamperes (mA) is 2.54 A?
11. 11.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) current (d) energy used each second
12. 12.📏 How many ohms (Ω) is 7.1 kΩ?
13. 13.True or false: the push of a cell is measured in watts (W). (a) True (b) False
14. 14.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) power (d) voltage
15. 15.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) the flow of charge (d) the push of a cell
16. 16.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
17. 17.📏 How many kilowatts (kW) is 500 W? =
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
20. 20.True or false: the ammeter measures current. (a) False (b) True
21. 21.True or false: the ammeter measures voltage. (a) False (b) True
22. 22.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
23. 23.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) voltage (d) resistance
24. 24.Which of these is measured in volts (V)? (a) resistance (b) current (c) the push of a cell (d) energy used each second
25. 25.📏 How many milliamperes (mA) is 2.9 A?
26. 26.📏 How many kilowatts (kW) is 1700 W? =
27. 27.True or false: voltage is measured in volts (V). (a) True (b) False
28. 28.True or false: the push of a cell is measured in volts (V). (a) False (b) True
29. 29.📏 How many kilo-ohms (kΩ) is 9900 Ω? =
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
31. 31.📏 How many ohms (Ω) is 2.7 kΩ?
32. 32.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
33. 33.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
34. 34.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
35. 35.📏 How many milliamperes (mA) is 0.68 A?
36. 36.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
37. 37.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
38. 38.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) current (c) how much a part resists (d) the push of a cell
39. 39.True or false: the voltmeter is joined in series. (a) True (b) False
40. 40.📏 How many kilowatts (kW) is 3000 W? =

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