Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 180 · 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, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
2. 2.True or false: the voltmeter is joined across a part. (a) False (b) True
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
4. 4.True or false: the voltmeter measures current. (a) True (b) False
5. 5.True or false: the voltmeter measures voltage. (a) False (b) True
6. 6.📏 How many kilowatts (kW) is 3500 W? =
7. 7.📏 How many kilo-ohms (kΩ) is 9600 Ω? =
8. 8.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
9. 9.True or false: power is measured in watts (W). (a) True (b) False
10. 10.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
11. 11.📏 How many watts (W) is 0.6 kW?
12. 12.True or false: the ammeter measures voltage. (a) True (b) False
13. 13.📏 How many watts (W) is 4.6 kW?
14. 14.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) resistance (d) current
15. 15.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) power (d) resistance
16. 16.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
17. 17.Which of these is measured in ohms (Ω)? (a) power (b) voltage (c) the push of a cell (d) how much a part resists
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
19. 19.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 100 (d) 60
20. 20.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
21. 21.📏 How many watts (W) is 3.3 kW?
22. 22.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
23. 23.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
24. 24.📏 How many kilowatts (kW) is 1800 W? =
25. 25.True or false: voltage is measured in ohms (Ω). (a) False (b) True
26. 26.📏 How many milliamperes (mA) is 1.24 A?
27. 27.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
28. 28.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
29. 29.📏 How many amperes (A) is 420 mA? =
30. 30.True or false: the voltmeter is joined in series. (a) False (b) True
31. 31.True or false: current is measured in ohms (Ω). (a) False (b) True
32. 32.True or false: the ammeter is joined in series. (a) True (b) False
33. 33.True or false: energy used each second is measured in watts (W). (a) False (b) True
34. 34.True or false: voltage is measured in volts (V). (a) False (b) True
35. 35.📏 How many kilo-ohms (kΩ) is 5600 Ω? =
36. 36.📏 How many kilo-ohms (kΩ) is 2900 Ω? =
37. 37.True or false: the push of a cell is measured in volts (V). (a) True (b) False
38. 38.📏 How many watts (W) is 2.9 kW?
39. 39.True or false: current is measured in amperes (A). (a) True (b) False
40. 40.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter

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