Exam-style question
Try this first
What effect does noise have on an analogue signal as shown in a signal-time graph?.
- A.It enhances the clarity of the signal.
- B.It introduces random fluctuations in the signal.
- C.It has no effect on the signal.
- D.It converts the signal to digital.
Model answer
What a good answer should say
- It introduces random fluctuations in the signal.
Explanation
Why this works
The evidence shows that noise can distort analogue signals, leading to random variations in the waveform. This implies that the integrity of the signal is compromised, making it less reliable for transmission.
Therefore, the conclusion is that noise negatively impacts the quality of analogue signals by adding unwanted variations.
Common mistake
No common mistake is linked to this question yet.