Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 631 · 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 voltmeter measures current. (a) False (b) True
2. 2.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
3. 3.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) how much a part resists (d) current
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
5. 5.📏 How many ohms (Ω) is 0.5 kΩ?
6. 6.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
7. 7.True or false: voltage is measured in volts (V). (a) False (b) True
8. 8.True or false: current is measured in watts (W). (a) False (b) True
9. 9.True or false: power is measured in watts (W). (a) True (b) False
10. 10.📏 How many ohms (Ω) is 7.4 kΩ?
11. 11.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
12. 12.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
13. 13.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
14. 14.True or false: the ammeter measures current. (a) False (b) True
15. 15.True or false: the ammeter measures voltage. (a) True (b) False
16. 16.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
17. 17.True or false: the voltmeter is joined in series. (a) True (b) False
18. 18.📏 How many kilo-ohms (kΩ) is 1800 Ω? =
19. 19.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
21. 21.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
22. 22.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) energy used each second (c) the flow of charge (d) voltage
23. 23.True or false: power is measured in volts (V). (a) True (b) False
24. 24.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
25. 25.📏 How many ohms (Ω) is 5.3 kΩ?
26. 26.📏 How many kilowatts (kW) is 3250 W? =
27. 27.📏 How many amperes (A) is 2290 mA? =
28. 28.True or false: energy used each second is measured in volts (V). (a) True (b) False
29. 29.📏 How many amperes (A) is 980 mA? =
30. 30.📏 How many kilo-ohms (kΩ) is 8100 Ω? =
31. 31.📏 How many milliamperes (mA) is 1.44 A?
32. 32.📏 How many watts (W) is 4.4 kW?
33. 33.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
34. 34.Which of these is measured in amperes (A)? (a) current (b) resistance (c) power (d) energy used each second
35. 35.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
36. 36.📏 How many watts (W) is 2.3 kW?
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
38. 38.True or false: the ammeter is joined in series. (a) True (b) False
39. 39.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
40. 40.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)

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