Exam-style question
Try this first
Which of the following statements best describes how the oscillation period of an astable multivibrator changes when the resistor values are increased?.
- A.The period increases with larger resistor values.
- B.The period decreases with larger resistor values.
- C.The period is independent of resistor values.
- D.The period depends only on the capacitor.
Model answer
What a good answer should say
- The period increases with larger resistor values.
Explanation
Why this works
The oscillation period of an astable multivibrator is given by T = 1.1 × (R_A + 2 R_B) × C. The period is directly proportional to the sum of R_A and twice R_B, so increasing either resistor increases the period.
Common mistake
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