Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 670 · 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) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
2. 2.📏 How many amperes (A) is 760 mA? =
3. 3.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
4. 4.Which of these is measured in amperes (A)? (a) the push of a cell (b) current (c) resistance (d) energy used each second
5. 5.True or false: the flow of charge is measured in volts (V). (a) True (b) False
6. 6.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
7. 7.True or false: the voltmeter measures current. (a) True (b) False
8. 8.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
10. 10.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
11. 11.📏 How many kilo-ohms (kΩ) is 100 Ω? =
12. 12.📏 How many milliamperes (mA) is 2.79 A?
13. 13.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
14. 14.📏 How many milliamperes (mA) is 0.54 A?
15. 15.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) the push of a cell (d) energy used each second
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
18. 18.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
19. 19.True or false: how much a part resists is measured in volts (V). (a) False (b) True
20. 20.📏 How many amperes (A) is 1700 mA? =
21. 21.True or false: the voltmeter measures voltage. (a) False (b) True
22. 22.True or false: the ammeter measures voltage. (a) False (b) True
23. 23.Which of these is measured in watts (W)? (a) the flow of charge (b) voltage (c) power (d) how much a part resists
24. 24.📏 How many amperes (A) is 2680 mA? =
25. 25.📏 How many milliamperes (mA) is 1.53 A?
26. 26.📏 How many milliamperes (mA) is 1.26 A?
27. 27.📏 How many watts (W) is 0.5 kW?
28. 28.📏 How many kilowatts (kW) is 2550 W? =
29. 29.True or false: energy used each second is measured in watts (W). (a) False (b) True
30. 30.Which of these is measured in watts (W)? (a) the flow of charge (b) energy used each second (c) current (d) voltage
31. 31.📏 How many watts (W) is 1.4 kW?
32. 32.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
33. 33.True or false: power is measured in watts (W). (a) False (b) True
34. 34.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
35. 35.True or false: current is measured in volts (V). (a) False (b) True
36. 36.Which of these is measured in ohms (Ω)? (a) resistance (b) the flow of charge (c) energy used each second (d) the push of a cell
37. 37.📏 How many amperes (A) is 500 mA? =
38. 38.True or false: the voltmeter is joined in series. (a) False (b) True
39. 39.📏 How many kilowatts (kW) is 4800 W? =
40. 40.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)

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