The time constant of a first order process with resistance R and capacitance C is__________________?
Correct answer: C. RC
- A. R + C
- B. R - C
- C. RC
- D. 1/RC
Explanation
A first-order system reaches about 63.2% of its final response after one time constant, and its resistance-capacitance model gives this constant as the product RC. Adding or subtracting R and C is dimensionally incorrect.
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