Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 5 · 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 of these is measured in ohms (Ω)? (a) current (b) resistance (c) energy used each second (d) voltage
2. 2.True or false: current is measured in watts (W). (a) False (b) True
3. 3.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) the flow of charge (d) power
4. 4.Which of these is measured in ohms (Ω)? (a) current (b) the push of a cell (c) power (d) how much a part resists
5. 5.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
6. 6.📏 How many kilowatts (kW) is 1800 W? =
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
8. 8.True or false: the ammeter measures voltage. (a) True (b) False
9. 9.📏 How many amperes (A) is 1660 mA? =
10. 10.True or false: power is measured in watts (W). (a) False (b) True
11. 11.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
12. 12.📏 How many ohms (Ω) is 9.3 kΩ?
13. 13.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) energy used each second (d) the push of a cell
14. 14.📏 How many kilo-ohms (kΩ) is 600 Ω? =
15. 15.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
16. 16.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
17. 17.📏 How many kilowatts (kW) is 600 W? =
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
19. 19.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
20. 20.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
21. 21.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) how much a part resists (d) the push of a cell
22. 22.📏 How many amperes (A) is 1010 mA? =
23. 23.📏 How many kilo-ohms (kΩ) is 4100 Ω? =
24. 24.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) current (d) how much a part resists
25. 25.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
26. 26.📏 How many ohms (Ω) is 9.7 kΩ?
27. 27.True or false: the ammeter is joined in series. (a) True (b) False
28. 28.True or false: voltage is measured in amperes (A). (a) False (b) True
29. 29.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
31. 31.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
32. 32.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
33. 33.True or false: the voltmeter is joined across a part. (a) False (b) True
34. 34.📏 How many watts (W) is 4.7 kW?
35. 35.📏 How many milliamperes (mA) is 0.16 A?
36. 36.📏 How many ohms (Ω) is 8.2 kΩ?
37. 37.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
38. 38.True or false: the voltmeter measures voltage. (a) True (b) False
39. 39.True or false: the ammeter is joined across a part. (a) False (b) True
40. 40.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) energy used each second (d) current

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