Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 502 · 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.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
2. 2.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
3. 3.📏 How many watts (W) is 0.9 kW?
4. 4.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) resistance (d) current
5. 5.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
6. 6.📏 How many kilowatts (kW) is 2050 W? =
7. 7.True or false: the push of a cell is measured in volts (V). (a) False (b) True
8. 8.📏 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
9. 9.True or false: power is measured in watts (W). (a) False (b) True
10. 10.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) a narrow pipe (d) the flow of water
11. 11.📏 How many kilowatts (kW) is 4600 W? =
12. 12.📏 How many milliamperes (mA) is 2.51 A?
13. 13.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
14. 14.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) energy used each second (d) current
15. 15.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
16. 16.True or false: the voltmeter measures current. (a) False (b) True
17. 17.📏 How many milliamperes (mA) is 1.49 A?
18. 18.📏 How many amperes (A) is 910 mA? =
19. 19.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
20. 20.True or false: the voltmeter is joined across a part. (a) True (b) False
21. 21.📏 How many watts (W) is 0.3 kW?
22. 22.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
23. 23.📏 How many amperes (A) is 1780 mA? =
24. 24.📏 How many kilowatts (kW) is 3600 W? =
25. 25.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
26. 26.True or false: voltage is measured in ohms (Ω). (a) False (b) True
27. 27.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
28. 28.📏 How many kilo-ohms (kΩ) is 2500 Ω? =
29. 29.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
30. 30.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
31. 31.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
32. 32.True or false: the voltmeter is joined in series. (a) True (b) False
33. 33.True or false: energy used each second is measured in watts (W). (a) False (b) True
34. 34.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) power (d) voltage
35. 35.True or false: the ammeter measures current. (a) True (b) False
36. 36.📏 How many watts (W) is 5 kW?
37. 37.True or false: the ammeter is joined in series. (a) True (b) False
38. 38.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
39. 39.📏 How many amperes (A) is 2200 mA? =
40. 40.📏 How many milliamperes (mA) is 0.52 A?

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