Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 88 · 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.📏 How many ohms (Ω) is 7.2 kΩ?
2. 2.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) voltage (d) current
3. 3.True or false: the voltmeter measures voltage. (a) False (b) True
4. 4.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
5. 5.True or false: the ammeter is joined across a part. (a) True (b) False
6. 6.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
7. 7.True or false: the ammeter measures current. (a) True (b) False
8. 8.True or false: energy used each second is measured in volts (V). (a) True (b) False
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the pipe colour (d) the water tank lid
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
11. 11.True or false: how much a part resists is measured in volts (V). (a) False (b) True
12. 12.📏 How many milliamperes (mA) is 2.02 A?
13. 13.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
14. 14.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) current (d) the flow of charge
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
16. 16.Which of these is measured in volts (V)? (a) energy used each second (b) power (c) voltage (d) the flow of charge
17. 17.📏 How many ohms (Ω) is 2.6 kΩ?
18. 18.📏 How many amperes (A) is 2650 mA? =
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
22. 22.Which of these is measured in watts (W)? (a) current (b) the flow of charge (c) voltage (d) power
23. 23.📏 How many amperes (A) is 360 mA? =
24. 24.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
25. 25.True or false: the ammeter measures voltage. (a) True (b) False
26. 26.📏 How many kilo-ohms (kΩ) is 5800 Ω? =
27. 27.📏 How many kilo-ohms (kΩ) is 500 Ω? =
28. 28.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) energy used each second (d) power
29. 29.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) energy used each second (d) the flow of charge
30. 30.📏 How many watts (W) is 1.7 kW?
31. 31.📏 How many kilowatts (kW) is 2800 W? =
32. 32.True or false: power is measured in watts (W). (a) False (b) True
33. 33.📏 How many amperes (A) is 780 mA? =
34. 34.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) energy used each second (d) the push of a cell
35. 35.True or false: the push of a cell is measured in watts (W). (a) False (b) True
36. 36.True or false: the push of a cell is measured in volts (V). (a) False (b) True
37. 37.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
38. 38.📏 How many kilowatts (kW) is 3650 W? =
39. 39.📏 How many ohms (Ω) is 7.7 kΩ?
40. 40.True or false: the voltmeter is joined in series. (a) False (b) True

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