Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 153 · 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.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
3. 3.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) how much a part resists (d) power
4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
6. 6.📏 How many watts (W) is 4.9 kW?
7. 7.📏 How many milliamperes (mA) is 1.79 A?
8. 8.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
9. 9.Which of these is measured in amperes (A)? (a) current (b) energy used each second (c) power (d) how much a part resists
10. 10.📏 How many kilowatts (kW) is 3200 W? =
11. 11.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
12. 12.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
13. 13.📏 How many amperes (A) is 1330 mA? =
14. 14.📏 How many amperes (A) is 130 mA? =
15. 15.True or false: the voltmeter is joined in series. (a) False (b) True
16. 16.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
18. 18.True or false: the ammeter is joined in series. (a) False (b) True
19. 19.📏 How many kilowatts (kW) is 1150 W? =
20. 20.📏 How many watts (W) is 2.3 kW?
21. 21.True or false: the push of a cell is measured in watts (W). (a) True (b) False
22. 22.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
23. 23.📏 How many amperes (A) is 270 mA? =
24. 24.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
26. 26.📏 How many amperes (A) is 1060 mA? =
27. 27.True or false: the voltmeter measures current. (a) False (b) True
28. 28.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) energy used each second (d) power
29. 29.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
30. 30.📏 How many amperes (A) is 2880 mA? =
31. 31.📏 How many ohms (Ω) is 7.2 kΩ?
32. 32.📏 How many ohms (Ω) is 5.2 kΩ?
33. 33.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
34. 34.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
35. 35.📏 How many amperes (A) is 640 mA? =
36. 36.📏 How many kilowatts (kW) is 50 W? =
37. 37.True or false: the ammeter measures current. (a) True (b) False
38. 38.📏 How many amperes (A) is 1950 mA? =
39. 39.📏 How many kilowatts (kW) is 3400 W? =
40. 40.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) resistance (d) power

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