Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 177 · 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.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
2. 2.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
3. 3.📏 How many amperes (A) is 2500 mA? =
4. 4.📏 How many watts (W) is 1.5 kW?
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
6. 6.📏 How many kilowatts (kW) is 2800 W? =
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
8. 8.📏 How many kilowatts (kW) is 4650 W? =
9. 9.True or false: voltage is measured in amperes (A). (a) False (b) True
10. 10.📏 How many amperes (A) is 2830 mA? =
11. 11.True or false: current is measured in amperes (A). (a) True (b) False
12. 12.📏 How many kilowatts (kW) is 1750 W? =
13. 13.📏 How many ohms (Ω) is 0.8 kΩ?
14. 14.True or false: the ammeter is joined in series. (a) True (b) False
15. 15.📏 How many kilowatts (kW) is 4350 W? =
16. 16.Which of these is measured in amperes (A)? (a) power (b) voltage (c) resistance (d) current
17. 17.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
18. 18.Which of these is measured in watts (W)? (a) power (b) voltage (c) current (d) resistance
19. 19.True or false: the voltmeter is joined across a part. (a) False (b) True
20. 20.True or false: the ammeter is joined across a part. (a) True (b) False
21. 21.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
22. 22.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
23. 23.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
24. 24.📏 How many kilowatts (kW) is 1300 W? =
25. 25.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
26. 26.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) power (d) voltage
27. 27.True or false: the voltmeter measures voltage. (a) False (b) True
28. 28.📏 How many ohms (Ω) is 0.1 kΩ?
29. 29.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
30. 30.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
31. 31.True or false: the ammeter measures current. (a) True (b) False
32. 32.Which of these is measured in ohms (Ω)? (a) power (b) the flow of charge (c) voltage (d) how much a part resists
33. 33.📏 How many watts (W) is 2 kW?
34. 34.True or false: the voltmeter is joined in series. (a) False (b) True
35. 35.📏 How many milliamperes (mA) is 0.46 A?
36. 36.True or false: voltage is measured in ohms (Ω). (a) False (b) True
37. 37.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
38. 38.📏 How many kilowatts (kW) is 3150 W? =
39. 39.True or false: the voltmeter measures current. (a) True (b) False
40. 40.📏 How many watts (W) is 1 kW?

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