Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 336 · 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 watts (W)? (a) energy used each second (b) current (c) the flow of charge (d) the push of a cell
2. 2.📏 How many amperes (A) is 710 mA? =
3. 3.True or false: the ammeter is joined in series. (a) True (b) False
4. 4.📏 How many ohms (Ω) is 9 kΩ?
5. 5.True or false: the ammeter is joined across a part. (a) False (b) True
6. 6.True or false: the ammeter measures voltage. (a) True (b) False
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.📏 How many amperes (A) is 1030 mA? =
9. 9.True or false: the voltmeter measures current. (a) False (b) True
10. 10.Which of these is measured in volts (V)? (a) the flow of charge (b) power (c) current (d) voltage
11. 11.📏 How many amperes (A) is 500 mA? =
12. 12.📏 How many milliamperes (mA) is 0.21 A?
13. 13.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
14. 14.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) resistance (d) current
15. 15.True or false: the voltmeter is joined in series. (a) True (b) False
16. 16.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
17. 17.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
18. 18.📏 How many kilo-ohms (kΩ) is 600 Ω? =
19. 19.📏 How many kilowatts (kW) is 200 W? =
20. 20.True or false: the voltmeter is joined across a part. (a) False (b) True
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
22. 22.📏 How many kilowatts (kW) is 4650 W? =
23. 23.📏 How many milliamperes (mA) is 2.83 A?
24. 24.📏 How many amperes (A) is 2730 mA? =
25. 25.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
26. 26.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
27. 27.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
28. 28.True or false: current is measured in amperes (A). (a) False (b) True
29. 29.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
30. 30.📏 How many kilo-ohms (kΩ) is 9600 Ω? =
31. 31.True or false: the ammeter measures current. (a) False (b) True
32. 32.📏 How many amperes (A) is 1110 mA? =
33. 33.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
34. 34.True or false: the voltmeter measures voltage. (a) False (b) True
35. 35.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
36. 36.True or false: power is measured in watts (W). (a) False (b) True
37. 37.📏 How many milliamperes (mA) is 2.75 A?
38. 38.True or false: the push of a cell is measured in watts (W). (a) True (b) False
39. 39.True or false: resistance is measured in watts (W). (a) True (b) False
40. 40.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100

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