Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 95 · 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 ammeter measures voltage. (a) True (b) False
2. 2.Which of these is measured in amperes (A)? (a) power (b) the flow of charge (c) the push of a cell (d) how much a part resists
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
4. 4.True or false: resistance is measured in ohms (Ω). (a) True (b) False
5. 5.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
6. 6.True or false: the voltmeter is joined across a part. (a) True (b) False
7. 7.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) power (d) voltage
8. 8.📏 How many milliamperes (mA) is 0.01 A?
9. 9.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
10. 10.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
11. 11.📏 How many amperes (A) is 2430 mA? =
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
13. 13.📏 How many ohms (Ω) is 8.6 kΩ?
14. 14.True or false: the ammeter is joined across a part. (a) False (b) True
15. 15.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
16. 16.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
17. 17.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
18. 18.Which of these is measured in amperes (A)? (a) resistance (b) how much a part resists (c) energy used each second (d) current
19. 19.True or false: the voltmeter measures voltage. (a) False (b) True
20. 20.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
21. 21.📏 How many kilo-ohms (kΩ) is 7600 Ω? =
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
23. 23.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
24. 24.📏 How many milliamperes (mA) is 1.13 A?
25. 25.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
26. 26.True or false: the ammeter is joined in series. (a) True (b) False
27. 27.True or false: energy used each second is measured in amperes (A). (a) True (b) False
28. 28.📏 How many amperes (A) is 470 mA? =
29. 29.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
30. 30.True or false: power is measured in watts (W). (a) True (b) False
31. 31.Which of these is measured in watts (W)? (a) the flow of charge (b) energy used each second (c) voltage (d) how much a part resists
32. 32.True or false: the voltmeter is joined in series. (a) True (b) False
33. 33.True or false: power is measured in volts (V). (a) False (b) True
34. 34.📏 How many milliamperes (mA) is 2.93 A?
35. 35.📏 How many milliamperes (mA) is 2.46 A?
36. 36.True or false: voltage is measured in amperes (A). (a) False (b) True
37. 37.📏 How many amperes (A) is 1790 mA? =
38. 38.True or false: voltage is measured in ohms (Ω). (a) True (b) False
39. 39.📏 How many kilo-ohms (kΩ) is 8000 Ω? =
40. 40.📏 How many kilo-ohms (kΩ) is 500 Ω? =

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