Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 356 · 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.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
3. 3.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) power (d) resistance
4. 4.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
5. 5.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) resistance (d) how much a part resists
6. 6.📏 How many kilowatts (kW) is 400 W? =
7. 7.Which of these is measured in watts (W)? (a) current (b) voltage (c) power (d) the push of a cell
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
9. 9.True or false: voltage is measured in volts (V). (a) True (b) False
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
11. 11.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
12. 12.📏 How many milliamperes (mA) is 1 A?
13. 13.True or false: the ammeter is joined across a part. (a) False (b) True
14. 14.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) the flow of charge
15. 15.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
17. 17.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
18. 18.📏 How many amperes (A) is 190 mA? =
19. 19.📏 How many ohms (Ω) is 3.3 kΩ?
20. 20.True or false: power is measured in volts (V). (a) False (b) True
21. 21.📏 How many kilo-ohms (kΩ) is 6000 Ω? =
22. 22.True or false: the voltmeter measures voltage. (a) False (b) True
23. 23.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) resistance (d) the push of a cell
24. 24.True or false: energy used each second is measured in watts (W). (a) False (b) True
25. 25.📏 How many milliamperes (mA) is 0.79 A?
26. 26.📏 How many milliamperes (mA) is 1.04 A?
27. 27.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) current (d) resistance
28. 28.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
29. 29.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
30. 30.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
31. 31.Which of these is measured in watts (W)? (a) energy used each second (b) current (c) the push of a cell (d) resistance
32. 32.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
33. 33.True or false: the push of a cell is measured in volts (V). (a) True (b) False
34. 34.📏 How many watts (W) is 2.4 kW?
35. 35.True or false: the voltmeter measures current. (a) False (b) True
36. 36.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
37. 37.True or false: the flow of charge is measured in volts (V). (a) False (b) True
38. 38.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
39. 39.True or false: the voltmeter is joined in series. (a) True (b) False
40. 40.📏 How many watts (W) is 0.1 kW?

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