A differentiating circuit is a simple RC circuit with output taken across ____________?
Correct answer: A. R
- A. R
- B. C
- C. Both R and C
- D. None of the above
Explanation
For an RC differentiator, the output is taken across the resistor because resistor voltage follows current, while the capacitor current is approximately proportional to the rate of change of input voltage. The differentiating approximation is valid for suitable time-constant and signal conditions.
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