Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 50 · 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 kilowatts (kW) is 4750 W? =
2. 2.True or false: the voltmeter measures voltage. (a) False (b) True
3. 3.📏 How many ohms (Ω) is 5.5 kΩ?
4. 4.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
5. 5.📏 How many kilowatts (kW) is 300 W? =
6. 6.📏 How many amperes (A) is 2750 mA? =
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.True or false: the flow of charge is measured in watts (W). (a) False (b) True
9. 9.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
10. 10.True or false: resistance is measured in volts (V). (a) False (b) True
11. 11.True or false: the voltmeter is joined across a part. (a) True (b) False
12. 12.True or false: the push of a cell is measured in volts (V). (a) False (b) True
13. 13.📏 How many amperes (A) is 2720 mA? =
14. 14.True or false: energy used each second is measured in watts (W). (a) False (b) True
15. 15.True or false: the ammeter measures current. (a) False (b) True
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
18. 18.Which of these is measured in ohms (Ω)? (a) power (b) voltage (c) current (d) resistance
19. 19.True or false: power is measured in watts (W). (a) True (b) False
20. 20.📏 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
21. 21.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) how much a part resists (d) the push of a cell
22. 22.📏 How many ohms (Ω) is 3.2 kΩ?
23. 23.Which of these is measured in volts (V)? (a) power (b) how much a part resists (c) voltage (d) current
24. 24.📏 How many kilowatts (kW) is 2900 W? =
25. 25.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
26. 26.True or false: how much a part resists is measured in volts (V). (a) False (b) True
27. 27.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
28. 28.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
29. 29.True or false: the ammeter measures voltage. (a) True (b) False
30. 30.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
31. 31.📏 How many milliamperes (mA) is 1.05 A?
32. 32.📏 How many milliamperes (mA) is 0.81 A?
33. 33.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
34. 34.📏 How many milliamperes (mA) is 2.48 A?
35. 35.True or false: the voltmeter measures current. (a) False (b) True
36. 36.Which of these is measured in watts (W)? (a) how much a part resists (b) energy used each second (c) voltage (d) the push of a cell
37. 37.📏 How many amperes (A) is 890 mA? =
38. 38.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
39. 39.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
40. 40.📏 How many milliamperes (mA) is 0.26 A?

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