Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 286 · 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 ammeter measures current. (a) False (b) True
2. 2.📏 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
3. 3.True or false: the ammeter is joined across a part. (a) True (b) False
4. 4.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) power (d) the push of a cell
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
6. 6.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) energy used each second (c) current (d) how much a part resists
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
8. 8.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
9. 9.Which of these is measured in watts (W)? (a) current (b) power (c) voltage (d) the push of a cell
10. 10.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) current (d) how much a part resists
11. 11.📏 How many amperes (A) is 990 mA? =
12. 12.True or false: the voltmeter measures current. (a) False (b) True
13. 13.True or false: power is measured in volts (V). (a) False (b) True
14. 14.True or false: current is measured in volts (V). (a) True (b) False
15. 15.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
16. 16.📏 How many milliamperes (mA) is 2.18 A?
17. 17.True or false: the push of a cell is measured in volts (V). (a) True (b) False
18. 18.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
19. 19.📏 How many amperes (A) is 20 mA? =
20. 20.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
21. 21.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) voltage (d) power
22. 22.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
23. 23.📏 How many milliamperes (mA) is 0.59 A?
24. 24.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
25. 25.📏 How many watts (W) is 3.3 kW?
26. 26.True or false: resistance is measured in ohms (Ω). (a) False (b) True
27. 27.📏 How many milliamperes (mA) is 0.8 A?
28. 28.📏 How many kilowatts (kW) is 50 W? =
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
30. 30.📏 How many amperes (A) is 690 mA? =
31. 31.True or false: the voltmeter is joined across a part. (a) False (b) True
32. 32.True or false: the ammeter measures voltage. (a) True (b) False
33. 33.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
34. 34.📏 How many kilowatts (kW) is 2350 W? =
35. 35.📏 How many amperes (A) is 1100 mA? =
36. 36.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
37. 37.True or false: voltage is measured in ohms (Ω). (a) True (b) False
38. 38.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
39. 39.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
40. 40.📏 How many kilowatts (kW) is 3350 W? =

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