Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 285 · 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.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
2. 2.True or false: the ammeter measures current. (a) False (b) True
3. 3.True or false: resistance is measured in ohms (Ω). (a) False (b) True
4. 4.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
5. 5.📏 How many watts (W) is 2.1 kW?
6. 6.True or false: current is measured in amperes (A). (a) True (b) False
7. 7.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
8. 8.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) current (c) how much a part resists (d) voltage
9. 9.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
10. 10.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
11. 11.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
12. 12.True or false: the ammeter is joined across a part. (a) False (b) True
13. 13.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
14. 14.📏 How many kilowatts (kW) is 4650 W? =
15. 15.True or false: power is measured in watts (W). (a) False (b) True
16. 16.📏 How many amperes (A) is 2640 mA? =
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
18. 18.📏 How many milliamperes (mA) is 2.11 A?
19. 19.📏 How many ohms (Ω) is 3.9 kΩ?
20. 20.📏 How many kilowatts (kW) is 4400 W? =
21. 21.True or false: the push of a cell is measured in volts (V). (a) True (b) False
22. 22.True or false: current is measured in watts (W). (a) True (b) False
23. 23.📏 How many milliamperes (mA) is 0.82 A?
24. 24.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
25. 25.True or false: the voltmeter is joined in series. (a) False (b) True
26. 26.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
27. 27.True or false: power is measured in volts (V). (a) True (b) False
28. 28.📏 How many kilo-ohms (kΩ) is 9100 Ω? =
29. 29.Which of these is measured in volts (V)? (a) current (b) voltage (c) power (d) how much a part resists
30. 30.📏 How many amperes (A) is 830 mA? =
31. 31.📏 How many amperes (A) is 1920 mA? =
32. 32.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
33. 33.True or false: the voltmeter is joined across a part. (a) True (b) False
34. 34.Which of these is measured in watts (W)? (a) current (b) how much a part resists (c) the push of a cell (d) power
35. 35.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
36. 36.📏 How many amperes (A) is 2200 mA? =
37. 37.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
38. 38.Which of these is measured in watts (W)? (a) the flow of charge (b) energy used each second (c) the push of a cell (d) current
39. 39.True or false: the voltmeter measures voltage. (a) False (b) True
40. 40.📏 How many amperes (A) is 940 mA? =

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