Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 179 · 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 unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
2. 2.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
3. 3.📏 How many amperes (A) is 2300 mA? =
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
5. 5.📏 How many kilo-ohms (kΩ) is 5000 Ω? =
6. 6.True or false: the voltmeter measures current. (a) False (b) True
7. 7.📏 How many amperes (A) is 1830 mA? =
8. 8.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
9. 9.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
11. 11.📏 How many ohms (Ω) is 8.3 kΩ?
12. 12.Which of these is measured in watts (W)? (a) current (b) how much a part resists (c) energy used each second (d) the flow of charge
13. 13.📏 How many kilowatts (kW) is 2800 W? =
14. 14.📏 How many kilowatts (kW) is 1250 W? =
15. 15.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) current (d) energy used each second
16. 16.📏 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
17. 17.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
18. 18.📏 How many milliamperes (mA) is 1.72 A?
19. 19.📏 How many kilowatts (kW) is 250 W? =
20. 20.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
21. 21.True or false: the ammeter measures voltage. (a) False (b) True
22. 22.📏 How many kilowatts (kW) is 150 W? =
23. 23.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
24. 24.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
25. 25.True or false: the voltmeter is joined across a part. (a) False (b) True
26. 26.📏 How many amperes (A) is 1250 mA? =
27. 27.True or false: the push of a cell is measured in volts (V). (a) False (b) True
28. 28.📏 How many amperes (A) is 2920 mA? =
29. 29.📏 How many milliamperes (mA) is 0.74 A?
30. 30.📏 How many kilo-ohms (kΩ) is 6300 Ω? =
31. 31.True or false: resistance is measured in ohms (Ω). (a) False (b) True
32. 32.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
33. 33.📏 How many kilowatts (kW) is 2500 W? =
34. 34.Which of these is measured in watts (W)? (a) power (b) resistance (c) voltage (d) the push of a cell
35. 35.📏 How many watts (W) is 2.2 kW?
36. 36.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
37. 37.📏 How many kilo-ohms (kΩ) is 200 Ω? =
38. 38.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) resistance (d) current
39. 39.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
40. 40.📏 How many amperes (A) is 2670 mA? =

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