Exam-style question
Try this first
Frequency modulation ? select the distinguishing feature. Use this to support: Describe the function of an astable circuit.
- A.frequency modulation: information is carried by changes in carrier frequency rather than amplitude for Astables.
- B.frequency modulation: uses fixed frequency and changing resistance.
- C.frequency modulation: confuses modulation with rectification.
- D.frequency modulation: ignores the carrier wave.
Model answer
What a good answer should say
- The correct option is frequency modulation: information is carried by changes in carrier frequency rather than amplitude for Astables.
Explanation
Why this works
This is the best answer because the frequency modulation context requires that exact electronics relationship. The other options are incorrect because they use a different component, reverse the circuit behaviour, or omit the output interpretation required for Astables.
Common mistake
No common mistake is linked to this question yet.