Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 89 · 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 voltage. (a) False (b) True
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
4. 4.True or false: energy used each second is measured in watts (W). (a) True (b) False
5. 5.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
6. 6.📏 How many milliamperes (mA) is 1.89 A?
7. 7.True or false: the ammeter measures current. (a) False (b) True
8. 8.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) how much a part resists (d) power
9. 9.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
10. 10.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
11. 11.Which of these is measured in watts (W)? (a) power (b) voltage (c) current (d) how much a part resists
12. 12.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
13. 13.True or false: the voltmeter is joined across a part. (a) False (b) True
14. 14.Which of these is measured in volts (V)? (a) how much a part resists (b) power (c) voltage (d) current
15. 15.True or false: the ammeter measures voltage. (a) True (b) False
16. 16.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
17. 17.📏 How many kilo-ohms (kΩ) is 1900 Ω? =
18. 18.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
19. 19.True or false: current is measured in amperes (A). (a) True (b) False
20. 20.📏 How many amperes (A) is 2310 mA? =
21. 21.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
22. 22.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
23. 23.📏 How many kilowatts (kW) is 700 W? =
24. 24.True or false: current is measured in volts (V). (a) True (b) False
25. 25.True or false: the ammeter is joined across a part. (a) False (b) True
26. 26.True or false: the ammeter is joined in series. (a) False (b) True
27. 27.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) power (d) resistance
28. 28.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
29. 29.📏 How many milliamperes (mA) is 0.55 A?
30. 30.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
31. 31.📏 How many watts (W) is 4.2 kW?
32. 32.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
33. 33.True or false: resistance is measured in ohms (Ω). (a) True (b) False
34. 34.True or false: power is measured in watts (W). (a) True (b) False
35. 35.📏 How many ohms (Ω) is 2.9 kΩ?
36. 36.📏 How many ohms (Ω) is 6.7 kΩ?
37. 37.📏 How many kilowatts (kW) is 2000 W? =
38. 38.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
39. 39.📏 How many milliamperes (mA) is 1.23 A?
40. 40.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) the push of a cell (d) power

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