Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 621 · 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.📏 How many watts (W) is 5 kW?
2. 2.True or false: resistance is measured in ohms (Ω). (a) False (b) True
3. 3.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) the push of a cell (d) energy used each second
4. 4.Which of these is measured in ohms (Ω)? (a) energy used each second (b) current (c) the push of a cell (d) how much a part resists
5. 5.Which of these is measured in volts (V)? (a) resistance (b) energy used each second (c) power (d) voltage
6. 6.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
7. 7.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
8. 8.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
9. 9.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
10. 10.📏 How many kilowatts (kW) is 4500 W? =
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
12. 12.True or false: the push of a cell is measured in volts (V). (a) True (b) False
13. 13.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
14. 14.True or false: energy used each second is measured in watts (W). (a) False (b) True
15. 15.📏 How many kilowatts (kW) is 4750 W? =
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
17. 17.📏 How many kilo-ohms (kΩ) is 2800 Ω? =
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
19. 19.📏 How many amperes (A) is 970 mA? =
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
21. 21.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
22. 22.True or false: voltage is measured in volts (V). (a) True (b) False
23. 23.True or false: voltage is measured in ohms (Ω). (a) False (b) True
24. 24.True or false: the ammeter measures voltage. (a) False (b) True
25. 25.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 100 (d) 60
26. 26.True or false: the voltmeter is joined in series. (a) True (b) False
27. 27.📏 How many amperes (A) is 520 mA? =
28. 28.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
29. 29.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
30. 30.📏 How many milliamperes (mA) is 0.99 A?
31. 31.True or false: power is measured in ohms (Ω). (a) True (b) False
32. 32.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
33. 33.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
34. 34.True or false: the ammeter is joined across a part. (a) False (b) True
35. 35.True or false: current is measured in amperes (A). (a) True (b) False
36. 36.True or false: energy used each second is measured in amperes (A). (a) False (b) True
37. 37.True or false: the voltmeter measures voltage. (a) True (b) False
38. 38.📏 How many watts (W) is 2.5 kW?
39. 39.True or false: the voltmeter is joined across a part. (a) False (b) True
40. 40.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) voltage (d) the flow of charge

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