Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 110 · 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) True (b) False
2. 2.📏 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
3. 3.True or false: the ammeter is joined in series. (a) False (b) True
4. 4.True or false: the push of a cell is measured in volts (V). (a) False (b) True
5. 5.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
6. 6.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) how much a part resists (d) current
9. 9.True or false: the voltmeter measures current. (a) True (b) False
10. 10.📏 How many kilowatts (kW) is 3400 W? =
11. 11.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 100 (d) 1000
12. 12.Which of these is measured in amperes (A)? (a) the flow of charge (b) power (c) energy used each second (d) the push of a cell
13. 13.True or false: resistance is measured in watts (W). (a) True (b) False
14. 14.True or false: the voltmeter is joined across a part. (a) False (b) True
15. 15.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
16. 16.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
17. 17.True or false: the ammeter measures voltage. (a) False (b) True
18. 18.📏 How many milliamperes (mA) is 1.75 A?
19. 19.📏 How many kilo-ohms (kΩ) is 500 Ω? =
20. 20.True or false: the voltmeter is joined in series. (a) True (b) False
21. 21.True or false: resistance is measured in volts (V). (a) True (b) False
22. 22.📏 How many milliamperes (mA) is 0.48 A?
23. 23.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) resistance (d) the flow of charge
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
26. 26.📏 How many milliamperes (mA) is 1.9 A?
27. 27.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
28. 28.📏 How many milliamperes (mA) is 2.15 A?
29. 29.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
30. 30.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
31. 31.True or false: voltage is measured in watts (W). (a) False (b) True
32. 32.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
33. 33.Which of these is measured in volts (V)? (a) how much a part resists (b) energy used each second (c) voltage (d) current
34. 34.📏 How many kilowatts (kW) is 4200 W? =
35. 35.True or false: energy used each second is measured in watts (W). (a) True (b) False
36. 36.📏 How many milliamperes (mA) is 0.64 A?
37. 37.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
38. 38.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
39. 39.📏 How many watts (W) is 4.2 kW?
40. 40.📏 How many milliamperes (mA) is 2.5 A?

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