Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 824 · 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 milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
2. 2.📏 How many milliamperes (mA) is 1.66 A?
3. 3.📏 How many amperes (A) is 10 mA? =
4. 4.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
6. 6.True or false: the ammeter measures voltage. (a) True (b) False
7. 7.📏 How many amperes (A) is 2100 mA? =
8. 8.📏 How many ohms (Ω) is 2.7 kΩ?
9. 9.True or false: the ammeter measures current. (a) False (b) True
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 the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
12. 12.📏 How many milliamperes (mA) is 1.52 A?
13. 13.True or false: the ammeter is joined across a part. (a) True (b) False
14. 14.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
15. 15.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) voltage (d) current
16. 16.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
17. 17.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
18. 18.True or false: power is measured in watts (W). (a) False (b) True
19. 19.📏 How many amperes (A) is 1760 mA? =
20. 20.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
21. 21.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
22. 22.📏 How many amperes (A) is 2910 mA? =
23. 23.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) power (c) resistance (d) the flow of charge
24. 24.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
25. 25.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) how much a part resists (d) voltage
26. 26.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) power (d) the flow of charge
27. 27.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
28. 28.📏 How many kilowatts (kW) is 3250 W? =
29. 29.True or false: voltage is measured in ohms (Ω). (a) True (b) False
30. 30.True or false: the voltmeter measures current. (a) False (b) True
31. 31.📏 How many kilowatts (kW) is 3050 W? =
32. 32.📏 How many kilowatts (kW) is 3800 W? =
33. 33.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
34. 34.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
35. 35.Which of these is measured in watts (W)? (a) how much a part resists (b) the push of a cell (c) energy used each second (d) voltage
36. 36.📏 How many amperes (A) is 1430 mA? =
37. 37.📏 How many milliamperes (mA) is 1.55 A?
38. 38.📏 How many amperes (A) is 60 mA? =
39. 39.📏 How many ohms (Ω) is 2.1 kΩ?
40. 40.True or false: the voltmeter is joined in series. (a) True (b) False

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