Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 13 · 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 of these is measured in volts (V)? (a) energy used each second (b) current (c) the flow of charge (d) the push of a cell
2. 2.True or false: current is measured in amperes (A). (a) True (b) False
3. 3.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
4. 4.True or false: the push of a cell is measured in watts (W). (a) True (b) False
5. 5.📏 How many kilowatts (kW) is 1200 W? =
6. 6.📏 How many amperes (A) is 2420 mA? =
7. 7.📏 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
8. 8.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
9. 9.Which of these is measured in amperes (A)? (a) the flow of charge (b) the push of a cell (c) voltage (d) power
10. 10.📏 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
11. 11.True or false: resistance is measured in volts (V). (a) False (b) True
12. 12.Which of these is measured in amperes (A)? (a) how much a part resists (b) resistance (c) the push of a cell (d) current
13. 13.📏 How many watts (W) is 1.5 kW?
14. 14.📏 How many ohms (Ω) is 8.4 kΩ?
15. 15.True or false: power is measured in watts (W). (a) False (b) True
16. 16.📏 How many milliamperes (mA) is 0.58 A?
17. 17.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
19. 19.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
20. 20.📏 How many kilo-ohms (kΩ) is 1000 Ω? =
21. 21.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
22. 22.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
23. 23.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
24. 24.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
25. 25.True or false: energy used each second is measured in amperes (A). (a) True (b) False
26. 26.True or false: the ammeter measures voltage. (a) True (b) False
27. 27.Which of these is measured in watts (W)? (a) current (b) resistance (c) energy used each second (d) how much a part resists
28. 28.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
29. 29.True or false: the ammeter measures current. (a) True (b) False
30. 30.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
31. 31.True or false: energy used each second is measured in volts (V). (a) False (b) True
32. 32.📏 How many kilowatts (kW) is 1250 W? =
33. 33.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
34. 34.True or false: the ammeter is joined across a part. (a) True (b) False
35. 35.True or false: the ammeter is joined in series. (a) True (b) False
36. 36.True or false: resistance is measured in watts (W). (a) True (b) False
37. 37.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
38. 38.📏 How many ohms (Ω) is 1 kΩ?
39. 39.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
40. 40.📏 How many kilowatts (kW) is 2050 W? =

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