Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 501 · 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 how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
2. 2.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) the push of a cell (d) current
3. 3.True or false: the ammeter measures current. (a) True (b) False
4. 4.True or false: voltage is measured in volts (V). (a) True (b) False
5. 5.True or false: voltage is measured in ohms (Ω). (a) False (b) True
6. 6.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) voltage (d) how much a part resists
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 100 (d) 60
8. 8.📏 How many watts (W) is 4.4 kW?
9. 9.📏 How many kilowatts (kW) is 1100 W? =
10. 10.📏 How many milliamperes (mA) is 1.32 A?
11. 11.📏 How many watts (W) is 3.8 kW?
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
13. 13.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) a bigger tank
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
15. 15.📏 How many milliamperes (mA) is 0.64 A?
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
17. 17.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) resistance (d) how much a part resists
18. 18.📏 How many amperes (A) is 2720 mA? =
19. 19.📏 How many amperes (A) is 1520 mA? =
20. 20.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
21. 21.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) current (d) the push of a cell
22. 22.Which of these is measured in watts (W)? (a) current (b) power (c) voltage (d) the flow of charge
23. 23.Which of these is measured in amperes (A)? (a) the push of a cell (b) the flow of charge (c) power (d) how much a part resists
24. 24.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
25. 25.True or false: the ammeter is joined across a part. (a) True (b) False
26. 26.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
27. 27.True or false: the ammeter is joined in series. (a) True (b) False
28. 28.True or false: the flow of charge is measured in volts (V). (a) False (b) True
29. 29.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
30. 30.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
31. 31.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) resistance (d) energy used each second
32. 32.📏 How many amperes (A) is 2140 mA? =
33. 33.True or false: the voltmeter measures current. (a) False (b) True
34. 34.True or false: the voltmeter is joined in series. (a) False (b) True
35. 35.True or false: the flow of charge is measured in watts (W). (a) True (b) False
36. 36.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) how much a part resists (d) the push of a cell
37. 37.📏 How many amperes (A) is 670 mA? =
38. 38.📏 How many kilowatts (kW) is 1050 W? =
39. 39.📏 How many milliamperes (mA) is 0.83 A?
40. 40.📏 How many watts (W) is 3.2 kW?

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