Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 699 · 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 ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
2. 2.True or false: power is measured in watts (W). (a) False (b) True
3. 3.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) the flow of charge (d) energy used each second
4. 4.True or false: the ammeter is joined in series. (a) False (b) True
5. 5.📏 How many kilowatts (kW) is 3550 W? =
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
7. 7.True or false: the ammeter measures current. (a) True (b) False
8. 8.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
9. 9.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) current (d) the push of a cell
10. 10.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
13. 13.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
14. 14.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
15. 15.True or false: energy used each second is measured in amperes (A). (a) True (b) False
16. 16.True or false: resistance is measured in ohms (Ω). (a) True (b) False
17. 17.True or false: resistance is measured in amperes (A). (a) True (b) False
18. 18.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) resistance (d) the flow of charge
19. 19.True or false: the ammeter measures voltage. (a) False (b) True
20. 20.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
21. 21.True or false: the voltmeter is joined across a part. (a) True (b) False
22. 22.📏 How many milliamperes (mA) is 0.77 A?
23. 23.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
24. 24.📏 How many milliamperes (mA) is 2.92 A?
25. 25.True or false: the push of a cell is measured in volts (V). (a) False (b) True
26. 26.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
27. 27.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
28. 28.True or false: the voltmeter measures current. (a) True (b) False
29. 29.📏 How many watts (W) is 3.4 kW?
30. 30.📏 How many kilowatts (kW) is 5000 W? =
31. 31.📏 How many kilowatts (kW) is 2750 W? =
32. 32.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
33. 33.📏 How many ohms (Ω) is 3.8 kΩ?
34. 34.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) energy used each second (d) the push of a cell
35. 35.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) resistance (d) power
36. 36.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water
37. 37.True or false: the voltmeter is joined in series. (a) False (b) True
38. 38.True or false: voltage is measured in ohms (Ω). (a) True (b) False
39. 39.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
40. 40.📏 How many milliamperes (mA) is 0.71 A?

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