The time constant and R-C circuit may also be defined as the time during which the charging current falls to ________ percent of its initial maximum value
Correct answer: A. 37
- A. 37
- B. 42
- C. 63
- D. 73
Explanation
In an RC circuit, charging current follows i = I₀e^(-t/RC), so at one time constant it becomes e^-1, or about 36.8% of its initial value. This is rounded to 37%.
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